“The lightest tablet in the world” Sony Xperia Z4 Tablet. Sony Xperia Z4 - Technical characteristics of BMW z4 generation

The BMW Z4 Roadster is an open two-seater that replaces the Z3 Roadster. Compared to its predecessor, the Z4 has grown a bit in all directions. Like its predecessor, the BMW Z4 is produced in the United States at the Spartanburg plant. The Roadster went on sale in the United States in October 2002, and did not appear in Europe until March 2003.

The BMW Z4 is a classic roadster with a sporty character. The design of the car displays shark-like features: the toothy “jaws” of the false radiator grille, the heavy gaze of the headlights, the long faceted “snout”. Convex and concave surfaces create a magnificent play of light and shadow. The BMW Z4 has a waist. It is formed by “sunken” doors, behind which the body seems to expand. The recess on the door is limited from above by a clear edge of the belt line, and from below - by an equally sharply defined “stiffening rib” of the high threshold. The picture is completed by a slash, boldly drawn from the bottom up from the front wheel to the windshield frame. And in the middle of this inclined edge is a white and blue BMW emblem, under which is hidden an orange turn signal repeater. Characteristic BMW radiator trim surrounded by high-gloss chrome and optional twin xenon headlights with integrated fog lights, gives the Z4 an elegant and assertive appearance. The Z4 2.5i comes standard with an elegant power-operated cloth awning. The power awning (optional on the 2.5i and standard on the 3.0i) opens in just 10 seconds.

The main “forming surface” of the interior is the “convex-concave” front panel. All the necessary information is right before your eyes thanks to chronographic-style instruments. The advanced navigation system with 16x9 display - non-glare TFT monitor (optional) - slides out from the instrument panel at the touch of a dedicated button. The steering wheel is small, sleek, with a leather rim and incredibly stylish metallic spokes. The design of the BMW Z4 is top notch, every detail has been worked out - be it the protective arches behind the seats, the handbrake handle or the door panels, “crossed out” with special “twisted” handles. The interior of the sports version with “metal” trim is especially good. "Sport" seats for the driver and passenger are standard on the Z4. In the Comfort version, some warmth is created only by natural wood inserts, replacing silver plastic panels that look like aluminum. Otherwise, everything is extremely restrained, technologically advanced and “sterile”. There is not a single unnecessary, pretentious detail, but each of the available ones is perfect in its completeness and functionality.

The advantage of the new body is a relatively large trunk (volume up to 260 liters) with a transformable compartment for an awning, which is quite enough to transport two large bags. The fabric canopy folds in a Z-shape and is equipped with a heated rear window.

Additional options include Hi-Fi audio system with amplifier low frequencies using Carver technology, as well as a special telephone. The new Z4 comes standard with a leather-wrapped sports steering wheel, a rollover protection system and tires that allow you to drive yourself to a tire shop if you get a puncture.

High-octane mixture of impeccable quality and the most modern technologies underlies the operation of the BMW Z4 six-cylinder engines, which are made from a special lightweight alloy. Thanks to the combination of the unique Double Vanos system, which allows the valves to be adjusted in an optimal way, a special air intake module and BMW four-valve technology, it was possible to achieve the highest torque and lightning-fast response. When the Sport mode is activated, the optional Driving Dynamic Control takes the engine's performance to an even higher level. The Z4 models are equipped with the 3.0i engine (170 kW / 231 hp / top speed 250 km/h) and the Z4 2.5i (141 kW / 192 hp / 235 km/h). The Z4 3.0i comes with a six-speed manual transmission, a five-speed manual transmission on the Z4 2.5i, or an optional five-speed automatic transmission.

Thanks to the wide track, low center of gravity, optimal weight distribution between the axles (50:50) and precise steering (Electric Power Steering), the BMW Z4 provides good dynamics and handling. In addition, wear-resistant, high-performance brakes and Dynamic Stability Control (DSC III) with traction control ensure maximum driving safety in all situations.

For the first time in the history of BMW cars, the Z4 replaces the conventional power steering with electric power steering. This scheme is much simpler. The electric power steering consumes energy only when turning the steering wheel; its operation is very easy to control in accordance with the speed or the level of lateral acceleration. But if BMW engineers and ZF, which traditionally supplies the Bavarians with steering mechanisms, have decades of experience in adjusting the reactive action of hydraulic boosters, then with electric motors everything will have to be learned anew. The Z4 Sport version reacts extremely sharply to the slightest turns of the steering wheel. And pressing the “sport” button on the console to the left of the gearbox lever changes not only the characteristics of the “electronic” gas pedal, but also the operation algorithm of the electric power steering. It's better to drive in "sport", but not much. The steering force is higher, but there is still no “transparency”. The reactions are instantaneous, but not accurate - you have to adjust the trajectory in high-speed turns with quick impulse movements. But at the same time, the BMW Z4 is no slower in turns than the Speedster. Firstly, the power unit here fully justifies this definition: it really is powerful. The traction “at the bottom” is powerful, and after 3000 rpm, pressing the gas pedal instantly causes a jet push in any gear! The chassis here, whatever you say, is excellent. The tires cling to the asphalt with a death grip, the suspension geometry allows the roadster to easily follow the steering wheel and willingly dive into high-speed turns. Gradually you get used to the car’s reactions, and the only annoying thing is the need to rest your knee on the door handle when making a left turn.

The brakes are great. The force on the pedal and its travel are selected in such a way that they allow you to easily decelerate just on the verge of locking - that is, you squeeze maximum deceleration out of the car without turning on the ABS! And how the “driver” electronics are configured... The DSC stabilization system stops slipping unobtrusively, but powerfully and confidently. Contrary to all motorsport canons, on the BMW Z4 you can safely press on the gas or brake in a turn - the computer will instantly remove excess traction or recalculate the required balance of braking forces on each wheel. In this case, pressing the DSC button once does not turn off the stabilization system, as usual, but activates DTC - Dynamic Traction Control. As the Bavarians say, this is some kind of compensation for the lack of a limited-slip differential on the Z4 - DTC activation allows for some “controlled” slipping of the drive wheels. But when a skid develops, the electronics immediately “wakes up” and pulls the drivers back. The “asphalt” roadster is not designed for rally driving techniques!

The Sport version has a very stiff suspension. The bassy sound of the inline-six fills the cabin - even open, with the roof folded. If the voice of the engine were a little louder, one could call it intrusive... A trip in the “comfortable” version evokes more pleasant emotions. On 16-inch wheels instead of 17-inch ones, without the “sport” button. The roadster reacts more calmly to steering turns, the exhaust sound is not so aggressive, and the suspension “swallows” bumps noticeably softer. This car is more predictable and understandable!

Perhaps the shortcomings in the habits of the “sports” roadster are largely explained by the different wheels. For example, on longitudinal waves of asphalt, the steering wheel of a car with a “sports” suspension begins to tilt towards the inclination - this happens when, due to the installation of wheels with a different offset, the so-called running-in arm of the steered wheels changes. And a “comfortable” roadster on the same slope calmly drives straight, without reacting to the profile of the road. And the BMW Z4 3.0i Comfort is hardly slower than the “sports” version.

By the way, despite the “fast” rack and pinion steering mechanism with a very low gear ratio (14.2), the steering wheel on the Z4 makes more than three turns from lock to lock. Due to this, the front wheels turn at a very large angle. The turning circle of the roadster, accordingly, is less than ten meters - excellent maneuverability!

Information about the make, model, and alternative names of the specific device, if available.

Design

Information about the dimensions and weight of the device, presented in different units of measurement. Materials used, colors offered, certificates.

Width Width information - refers to the horizontal side of the device in its standard orientation during use.	72 mm (millimeters) 7.2 cm (centimeters) 0.24 ft (feet) 2.83 in (inches)
Height Height information - refers to the vertical side of the device in its standard orientation during use.	146 mm (millimeters) 14.6 cm (centimeters) 0.48 ft (feet) 5.75 in (inches)
Thickness Information about the thickness of the device in different units measurements.	6.9 mm (millimeters) 0.69 cm (centimeters) 0.02 ft (feet) 0.27 in (inches)
Weight Information about the weight of the device in different units of measurement.	144 g (grams) 0.32 lbs 5.08 oz (ounces)
Volume The approximate volume of the device, calculated based on the dimensions provided by the manufacturer. Refers to devices with the shape of a rectangular parallelepiped.	72.53 cm³ (cubic centimeters) 4.4 in³ (cubic inches)
Colors Information about the colors in which this device is offered for sale.	Black White Green Copper
Materials for making the case Materials used to make the device body.	Aluminium alloy Glass
Certification Information about the standards to which this device is certified.	IP58 IP68

SIM card

The SIM card is used in mobile devices to store data that certifies the authenticity of mobile service subscribers.

Mobile networks

A mobile network is a radio system that allows multiple mobile devices to communicate with each other.

GSM GSM (Global System for Mobile Communications) is designed to replace the analogue mobile network (1G). For this reason, GSM is often called a 2G mobile network. It is improved by the addition of GPRS (General Packet Radio Services), and later EDGE (Enhanced Data rates for GSM Evolution) technologies.	GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz
UMTS UMTS is an abbreviation for Universal Mobile Telecommunications System. It is based on the GSM standard and belongs to 3G mobile networks. Developed by 3GPP and its biggest advantage is providing greater speed and spectral efficiency thanks to W-CDMA technology.	UMTS 850 MHz UMTS 900 MHz UMTS 1700/2100 MHz UMTS 1900 MHz UMTS 2100 MHz
LTE LTE (Long Term Evolution) is defined as a fourth generation (4G) technology. It is developed by 3GPP based on GSM/EDGE and UMTS/HSPA to increase the capacity and speed of wireless mobile networks. The subsequent technology development is called LTE Advanced.	LTE 800 MHz LTE 900 MHz LTE 1700/2100 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE 700 MHz (B28)

Mobile communication technologies and data transfer speeds

Communication between devices on mobile networks is carried out using technologies that provide different data transfer rates.

Operating system

An operating system is a system software that manages and coordinates the operation of hardware components in a device.

SoC (System on Chip)

A system on a chip (SoC) includes all the most important hardware components of a mobile device on one chip.

SoC (System on Chip) A system on a chip (SoC) integrates various hardware components, such as a processor, graphics processor, memory, peripherals, interfaces, etc., as well as the software necessary for their operation.	Qualcomm Snapdragon 810 MSM8994
Technological process Information about the technological process by which the chip is manufactured. Nanometers measure half the distance between elements in the processor.	20 nm (nanometers)
Processor (CPU) The primary function of a mobile device's processor (CPU) is to interpret and execute instructions contained in software applications.	4x 2.0 GHz ARM Cortex-A57, 4x 1.5 GHz ARM Cortex-A53
Processor size The size (in bits) of a processor is determined by the size (in bits) of the registers, address buses, and data buses. 64-bit processors have higher performance compared to 32-bit processors, which in turn are more powerful than 16-bit processors.	64 bit
Instruction Set Architecture Instructions are commands with which the software sets/controls the operation of the processor. Information about the instruction set (ISA) that the processor can execute.	ARMv8-A
Level 0 cache (L0) Some processors have L0 (level 0) cache, which is faster to access than L1, L2, L3, etc. The advantage of having such memory is not only higher performance, but also reduced power consumption.	4 kB + 4 kB (kilobytes)
Level 1 cache (L1) Cache memory is used by the processor to reduce access time to more frequently used data and instructions. L1 (level 1) cache is small in size and works much faster than both system memory and other cache levels. If the processor does not find the requested data in L1, it continues to look for it in the L2 cache. On some processors, this search is performed simultaneously in L1 and L2.	16 kB + 16 kB (kilobytes)
Level 2 cache (L2) L2 (level 2) cache memory is slower than L1, but in return it has a higher capacity, allowing caching more data. It, like L1, is much faster than system memory (RAM). If the processor does not find the requested data in L2, it continues to look for it in the L3 cache (if available) or in RAM memory.	2048 kB (kilobytes) 2 MB (megabytes)
Number of processor cores The processor core executes software instructions. There are processors with one, two or more cores. Having more cores increases performance by allowing multiple instructions to be executed in parallel.	8
CPU clock speed The clock speed of a processor describes its speed in terms of cycles per second. It is measured in megahertz (MHz) or gigahertz (GHz).	2000 MHz (megahertz)
Graphics Processing Unit (GPU) Graphics processing unit (GPU) handles calculations for various 2D/3D graphic applications. IN mobile devices ah it is used most often by games, consumer interface, video applications, etc.	Qualcomm Adreno 430
GPU clock speed Running speed is the clock speed of the GPU, measured in megahertz (MHz) or gigahertz (GHz).	650 MHz (megahertz)
Volume random access memory(RAM) Random access memory (RAM) is used by the operating system and all installed applications. Data stored in RAM is lost after the device is turned off or restarted.	3 GB (gigabytes)
Type of random access memory (RAM) Information about the type of random access memory (RAM) used by the device.	LPDDR4
Number of RAM channels Information about the number of RAM channels that are integrated into the SoC. More channels mean higher data rates.	Dual channel
RAM frequency The frequency of RAM determines its operating speed, more specifically, the speed of reading/writing data.	1600 MHz (megahertz)

Built-in memory

Each mobile device has built-in (non-removable) memory with a fixed capacity.

Memory cards

Memory cards are used in mobile devices to increase the storage capacity for storing data.

Screen

The screen of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.

Type/technology One of the main characteristics of the screen is the technology by which it is made and on which the quality of the information image directly depends.	IPS
Diagonal For mobile devices, screen size is expressed by the length of its diagonal, measured in inches.	5.2 in (inches) 132.08 mm (millimeters) 13.21 cm (centimeters)
Width Approximate screen width	2.55 in (inches) 64.75 mm (millimeters) 6.48 cm (centimeters)
Height Approximate Screen Height	4.53 in (inches) 115.12 mm (millimeters) 11.51 cm (centimeters)
Aspect Ratio The ratio of the dimensions of the long side of the screen to its short side	1.778:1 16:9
Permission Screen resolution shows the number of pixels vertically and horizontally on the screen. Higher resolution means clearer image detail.	1080 x 1920 pixels
Pixel Density Information about the number of pixels per centimeter or inch of the screen. Higher density allows information to be displayed on the screen with clearer detail.	424 ppi (pixels per inch) 166 ppcm (pixels per centimeter)
Color depth Screen color depth reflects the total number of bits used for color components in one pixel. Information about the maximum number of colors that the screen can display.	24 bit 16777216 flowers
Screen area Approximate percentage of screen space on the front of the device.	71.14% (percent)
Other characteristics Information about other screen features and characteristics.	capacitive Multi-touch Scratch resistance

Sensors

Different sensors perform different quantitative measurements and convert physical indicators into signals that a mobile device can recognize.

Rear camera

The main camera of a mobile device is usually located on its back panel and may be combined with one or more secondary cameras.

Sensor model	Sony IMX220 Exmor RS
Sensor type Information about the camera sensor type. Some of the most widely used types of sensors in mobile device cameras are CMOS, BSI, ISOCELL, etc.	CMOS (complementary metal-oxide semiconductor)
Sensor size Information about the dimensions of the photosensor used in the device. Typically, cameras with larger sensors and lower pixel densities offer higher image quality despite the lower resolution.	6.17 x 4.55 mm (millimeters) 0.3 in (inches)
Pixel size Pixels are usually measured in microns. Larger pixels are able to capture more light and therefore provide better low-light photography and wider dynamic range than smaller pixels. On the other hand, smaller pixels allow for higher resolution while maintaining the same sensor size.	1.176 µm (micrometers) 0.001176 mm (millimeters)
Crop factor The crop factor is the ratio between the dimensions of the full-frame sensor (36 x 24 mm, equivalent to a frame of standard 35 mm film) and the dimensions of the device's photosensor. The indicated number represents the ratio of the diagonals of the full-frame sensor (43.3 mm) and the photosensor of a particular device.	5.64
ISO (light sensitivity) The ISO value/number indicates the sensitivity of the sensor to light. Digital camera sensors operate within a specific ISO range. The higher the ISO number, the more sensitive the sensor is to light.	50 - 12800
Svetlosila F-stop (also known as aperture, aperture, or f-number) is a measure of the size of a lens's aperture, which determines the amount of light entering the sensor. The lower the f-number, the larger the aperture and the more light reaches the sensor. Typically the f-number is specified to correspond to the maximum possible aperture of the aperture.	f/2
Flash type The rear (rear) cameras of mobile devices mainly use LED flashes. They can be configured with one, two or more light sources and vary in shape.	LED
Image resolution	5248 x 3936 pixels 20.66 MP (megapixels)
Video resolution	3840 x 2160 pixels 8.29 MP (megapixels)
	30fps (frames per second)
Characteristics Information about additional software and hardware features of the rear (rear) camera.	Autofocus Continuous shooting Digital zoom Digital image stabilization Geographical tags Panoramic photography HDR shooting Touch Focus Face recognition Adjusting the white balance ISO Setting Exposure compensation Self-timer Scene Selection Mode Macro mode
	1080p @ 60 fps 720p@120fps

Front-camera

Smartphones have one or more front cameras of various designs - a pop-up camera, a rotating camera, a cutout or hole in the display, an under-display camera.

Sensor model Information about the manufacturer and model of the sensor used by the camera.	Sony Exmor R
Focal length Focal length indicates the distance in millimeters from the sensor to the optical center of the lens. Equivalent focal length (35mm) is the focal length of a mobile device camera equal to the focal length of a 35mm full-frame sensor, which will achieve the same viewing angle. It is calculated by multiplying the actual focal length of a mobile device's camera by the crop factor of its sensor. Crop factor can be defined as the ratio between the diagonals of a 35 mm full-frame sensor and the sensor of a mobile device.	25 mm (millimeters) *(35 mm / full frame)
Image resolution One of the main characteristics of cameras is resolution. It represents the number of horizontal and vertical pixels in an image. For convenience, smartphone manufacturers often list resolution in megapixels, indicating the approximate number of pixels in millions.	2592 x 1944 pixels 5.04 MP (megapixels)
Video resolution Information about the maximum video resolution that the camera can record.	1920 x 1080 pixels 2.07 MP (megapixels)
Video recording speed (frame rate) Information about the maximum recording speed (frames per second, fps) supported by the camera at maximum resolution. Some of the most basic video recording speeds are 24 fps, 25 fps, 30 fps, 60 fps.	30fps (frames per second)

Audio

Information about the type of speakers and audio technologies supported by the device.

Radio

The radio of the mobile device is a built-in FM receiver.

Location determination

Information about the navigation and location technologies supported by your device.

WiFi

Wi-Fi is a technology that provides wireless communication for transmitting data over close distances between various devices.

Bluetooth

Bluetooth is a standard for secure wireless data transfer between various devices of different types over short distances.

Version There are several Bluetooth versions, while each subsequent one improves communication speed, coverage, and facilitates easier detection and connection of devices. Information about the Bluetooth version of the device.

4.1

Characteristics Bluetooth uses different profiles and protocols that provide faster data transfer, energy savings, improved device discovery, etc. Some of these profiles and protocols that the device supports are shown here.

A2DP (Advanced Audio Distribution Profile) AVRCP (Audio/Visual Remote Control Profile) DIP (Device ID Profile) GAP (Generic Access Profile) GATT (Generic Attribute Profile) HDP (Health Device Profile) HFP (Hands-Free Profile) HID (Human Interface Profile) HSP (Headset Profile) MAP (Message Access Profile) OPP (Object Push Profile) PAN (Personal Area Networking Profile) PBAP/PAB (Phone Book Access Profile) SPP ( Serial Port protocol)

USB

USB (Universal Serial Bus) is an industry standard that allows different electronic devices to exchange data.

HDMI

HDMI (High-Definition Multimedia Interface) is a digital audio/video interface that replaces older analog audio/video standards.

Headphone jack

This is an audio connector, also called an audio jack. The most widely used standard in mobile devices is the 3.5mm headphone jack.

Connecting devices

Information about other important connection technologies supported by your device.

Browser

A web browser is a software application for accessing and viewing information on the Internet.

Browser Information about some of the main characteristics and standards supported by the device's browser.

HTML HTML5 Flash CSS 3

Audio file formats/codecs

Mobile devices support different audio file formats and codecs, which respectively store and encode/decode digital audio data.

Video file formats/codecs

Mobile devices support different video file formats and codecs, which respectively store and encode/decode digital video data.

Battery

Mobile device batteries differ from each other in their capacity and technology. They provide the electrical charge necessary for their functioning.

Capacity A battery's capacity indicates the maximum charge it can hold, measured in milliamp-hours.	2930 mAh (milliamp-hours)
Type The type of battery is determined by its structure and, more precisely, the chemicals used. Exist different types batteries, with lithium-ion and lithium-ion polymer batteries most often used in mobile devices.	Li-polymer
Talk time 2G 2G talk time is the period of time during which the battery charge is completely discharged during a continuous conversation on a 2G network.	12 h (hours) 720 min (minutes) 0.5 days
2G standby time 2G standby time is the period of time during which the battery charge is completely discharged when the device is in stand-by mode and connected to a 2G network.	580 h (hours) 34800 min (minutes) 24.2 days
3G talk time 3G talk time is the period of time during which the battery charge is completely discharged during a continuous conversation on a 3G network.	17 h (hours) 1020 min (minutes) 0.7 days
3G standby time 3G standby time is the period of time during which the battery charge is completely discharged when the device is in stand-by mode and connected to a 3G network.	590 h (hours) 35400 min (minutes) 24.6 days
4G standby time The 4G standby time is the amount of time it takes for the battery to fully discharge when the device is in stand-by mode and connected to a 4G network.	540 h (hours) 32400 min (minutes) 22.5 days
Characteristics Information about some additional characteristics of the device's battery.	Fixed

The BMW company has been actively updating its old cars lately and is very active in the market. This is a very good position for business and for the audience. Today we will discuss the new, third generation BMW Z4 2109 in the G29 body.

The roadster was presented at the Pebble Beach Concours d'Elegance in California, and the world premiere for the automotive market took place in October in Paris. The release of the model just complements the line of most updated models; the roadster fits into it as it should.

Updated design

The visual part of the car has changed a lot compared to. The car became more aggressive and was attracted to the new style of the Bavarian brand, especially similar to.

The long front hood with sculpted shapes comes down to a new bumper. The body kit itself creates a catchy, aggressive look due to the massive air intakes with small foglights integrated into them. The classic radiator grille has moved to the bumper, now it is much larger and has acquired chrome-plated elements like a Mercedes.

New LED-based optics stand out. The headlights are large, but they add aggression. Now the side lights and high beam section of the Z4 are vertical, this was not the case before.

From the side, the eye immediately falls on the relief line running from the bottom of the front arch of the BMW Z4 to the beginning of the rear headlights. A huge gill near the front arch adds sporty style. Air coming from the front air intake passes through the gills, this removes turbulence, cools the braking system and reduces the drag coefficient.

The roof, unfortunately for most, is soft. Of course it’s more convenient, it’s better for speed, but visually the roadster with the soft roof up doesn’t look very good. The cover can be raised and lowered in 10 seconds, and the maximum speed at which this can be done is 50 km/h.

The rear is visualized very cool, the bumper attracts special attention. The rear bumper of the BMW Z4 G29 features massive vertical air outlets. Below you can see the huge exhaust pipes. The shape of the trunk is made taking into account aerodynamics, a so-called spoiler is formed, on which a wide brake signal is duplicated. Thin optics look very stylish, similar to those installed on.

Body dimensions:

• length – 4324 mm;
• width – 1864 mm;
• height – 1304 mm;
• wheelbase – 2470 mm;
• ground clearance - 117 mm.

Design customization

The car can be changed externally, there are many options for improvements, that is, it will be unrealistic to meet two completely similar Bavarian roadsters in the future. There are several classic design variations: Sport Line; M Sport; M40i. You can see the difference in the photo below.

Can various elements The body can be made in glossy black, the so-called Shadow Line, which can also be stretched over the radiator grille. The convertible roof can be painted in a softer color rather than black if desired.

There are also different body colors:

• white;
• orange metallic;
• metallic red;
• metallic blue;
• black metallic;
• sulfur metallic.

The coolest thing is that all the colors are free for now, except for the last one, for which you will have to pay as much as 204,000 rubles.

BMW Z4 2019 corporate salon

Why branded? Because its design is familiar to every owner of any new BMW model. If everything is clear with the fifth X and with the 8-Series, then exactly the same interior can be found in. This is normal practice for Bavarians and it is stupid to condemn it.

You will sit on leather sports seats with electrical adjustments. There are only two seats, it’s not worth making 4 to get into another class, thanks to this there is enough free space for two, and we are talking about a roadster.

The pilot's hands will rest on a classic 3-spoke leather steering wheel with gear paddles and control buttons for the instrument panel, multimedia and head-up display. The instrument panel is completely electronic - a 5.7-inch display that displays absolutely everything you want.

The BMW Live Cockpit is a mixture of two displays, namely the instrument cluster and an 8.8-inch display on the center console. All this works on the BMW 7.0 operating system, everything is touch-sensitive, there is voice control, gesture control and iDrive controller.

On the center console of the BMW Z4, under the display, there is another small one, between the chrome air deflectors. This monitor displays data for 2-zone climate control, which needs to be adjusted using a strip stylish keys under the deflectors. Difficult to describe? A glance at the photo will immediately make it clear what we mean.

The tunnel is partly made of aluminum, decorated in carbon fiber. There is a niche with a cigarette lighter, a brand new gearbox selector, driving mode and engine start buttons and an iDrive control unit.

Interior customization

The interior is trimmed with Vernasca leather, the color of which can be chosen free of charge:

• red;
• white with black stitching;
• black;
• cognac color with black stitching;
• black with blue stitching.

Ambient light lighting with the ability to choose the color of the glow will be installed throughout the cabin for additional money. 11 colors installed.

M Sport seats with integrated headrests that can be precisely adjusted to the body are also available as an option. This will give you perfect body support during sporty riding.

Also available as an option, a Harman Kardon Surround Sound audio system with 12 speakers throughout the Z4 2019 cabin and a 7-channel amplifier will be installed. The equalizer is automatic, it also adjusts the volume depending on the speed of movement.

Engines and gearbox

Type	Volume	Power	Torque	Overclocking	Maximum speed	Number of cylinders
Petrol	2.0 l	197 hp	320 H*m	6.6 sec.	240 km/h	4
Petrol	2.0 l	258 hp	400 H*m	5.4 sec.	250 km/h	4
Petrol	3.0 l	340 hp	500 H*m	4.5 sec.	250 km/h	6

The roadster engine line consists of 3 gasoline engines. The power is not as great as it might seem visually, but the dynamics will please you.

1. The first 2-liter turbocharged unit provides a 6.6-second acceleration to hundreds and a top speed of 240 km/h. Engine output is 197 horsepower at 4500 rpm and 320 H*m of torque at 1450 rpm.
2. The second installation technically repeats the previous one, but there are some improvements. They made it possible to squeeze out 258 horses and 400 H*m of torque. Due to this, the acceleration speed to hundreds was reduced to 5.8 seconds, and maximum speed electronically limited to 250 km/h.
3. The top-of-the-line unit for the M40i is BMW's 3.0-litre inline-6 ​​TwinPower Turbo engine. The engine is equipped with a proprietary Double-VANOS and Valvetronic system, due to which 340 horsepower and 500 H*m of torque were removed from it. It will accelerate to hundreds in 4.5 seconds; the maximum speed of the BMW Z4 is also limited.

The only pair is an 8-speed Steptronic automatic transmission with closely spaced gear ratios. The torque is transmitted only to the rear axle through the M Sport differential, which distributes it to the rear wheels to optimize traction and vehicle stability.

Chassis

The car sits on a completely independent suspension from the CLAR platform, with an optional M Sport adaptive suspension lowered by 10 mm. Adaptive suspension involves additional buttons in the cabin to select the driving mode, and at the same time the stiffness of the steering column changes. The steering is also adaptive with servotronic.

The roadster is stopped by disc brakes with 4-piston fixed calipers. The discs on both axles are ventilated. Of course, the braking system is complemented by electronic assistants, for example, classic ABS and EBD.

Price and options Z4 G29

Finally, the most interesting thing about such a car is its price tag. Three trim levels are offered, which do not differ in internal equipment; you only pay for the engine.

Equipment:

• SDrive20i – 3,190,000 rubles;
• SDrive30i – 3,820,000 rubles;
• M40i – 4,760,000 rubles.

In any configuration without options you will have:

• leather in the interior;
• Rear View Camera;
• Cruise control;
• front and rear parking sensors;
• 17-inch wheels;
• heated front seats;
• rain and light sensors;
• LED optics without adaptation;
• tire pressure sensor;
• adaptive steering;
• heated steering wheel.

You can also install a huge number of options, with which the maximum price tag of the roadster will jump over 5.5 million rubles. List of options:

• adaptive cruise control;
• automatic parking system;
• keyless entry to the cabin;
• 18-inch wheels;
• M Sport seats;
• electrically adjustable seats with memory;
• adaptive head optics;
• automatic high beam headlight control;
• head-up display;
• wireless charging for smartphone;
• Harman/Kardon audio system;
• interior lighting system.

Conclusion from the review: the new BMW Z4 2019 turned out to be cool, like all new products from the Bavarian manufacturer. The roadster is very cool, it will attract the attention of passers-by, and at the same time it is relatively inexpensive. What do you think about the new product?

Video review

It debuted at the 2002 Paris Auto Show and was produced at BMW's plant in the USA (Greer, South Carolina), and starting with the 2009 model year, the second generation Z4 was produced in Regensburg (Germany).

The design of the first Z4 was created by Chris Bangle, and as for the mechanics, the engines for the car were taken mainly from and.

BMW E85 Roadster

This small size, larger than any other sports car in the world, embodies the typical characteristics of a roadster:

• sports dynamism;
• high-performance motors;
• outstanding suspension and rigid chassis;
• innovative technologies;
• and last but not least the design of the Roadster, which makes this car unique;

Initially available only as a convertible, the Z4 was available with a wide range of engines, ranging from a 2.0-liter 4-cylinder to a 3.0-liter 6-cylinder.

Four years after its world premiere, the Roadster was updated in 2006. The facelifted model received minor changes to the exterior design of the body and was equipped with new electronic features as standard. In addition, a new 6-cylinder N52 engine was available on the car.

Technical characteristics of the BMW E85 Roadster

	Engine	Volume. cm³	Power, hp	Torque, Nm
2.0i		1995	150	200
2.2i		2171	170	210
2.5i	M54B25/N52B25	2494/2497	192/177	245/230
2.5si		2497	218	250
3.0i	M54B30	2979	231	300
3.0si	N52B30	2996	265	315

BMW E86 Coupe

The BMW Z4 Coupe was originally unveiled as a concept car at the Frankfurt Motor Show in 2005, and a year later, the company unveiled new version bodies in New York.

The soft top was replaced by a wide rear curve of steel, giving the coupe a powerful and elegant body design. The two-seater version of the Z4 was endowed with impressive performance and was developed at the highest level of automotive engineering.

This version of the body was available in one modification - 3.0si and was equipped with a 6-cylinder N52 engine with 265 hp, which is capable of accelerating the coupe in 5.7 seconds from zero to 100 km/h, the same power unit is installed on the roadster .

BMW E89 Roadster

The 2nd generation Z4 is BMW's classic roadster with the most powerful and stylish design ever created. was launched in 2009 and is the only car in its segment to combine the classic proportions of a small car with a retractable roof with rear-axle seating, rear-wheel drive and a retractable hardtop.

In 2013, the E89 was updated. The car gets a new "Valencia Orange" paint job, new 17- and 18-inch alloy wheels and a contrasting black roof (the latter option is optional).

The top version is the sDrive35is, which is equipped with a six-cylinder engine producing 340 hp. and "M package".

Video review of the BMW Z4 E89 from the “Big Test Drive”

Technical characteristics of the BMW E89 Roadster

	Motor	Volume, cubic cm	Power, hp	Torque, Nm
sDrive18i		1997	156	240
sDrive20i	N20B20	1997	184	270
sDrive23i	N52B25	2497	204	250
sDrive28i	N20B20	1997	245	350
sDrive30i	N52B30	2996	258	310
sDrive35i		2979	306	400
sDrive35is	N54B30	2979	340	450

BMW G29

It was originally presented in 2017 as a concept car. Serial production of the car will start in 2018.

Unlike its predecessor, the car will have a soft roof and be equipped with three engines.

on the most powerful Snapdragon 810 platform

On MWC exhibition 2015 Sony introduced only two new products in the mobile device segment - the M4 Aqua smartphone and the Z4 Tablet, which we immediately got to know better. A detailed study of the presented smartphone is still ahead, and in this article we will talk about the fourth tablet in Xperia series. It has been noticed that in mobile devices Sony alternates the output of large and small devices, so after the Z3 Tablet Compact a large ten-inch tablet was released.

Technical specifications Sony Xperia Z4 Tablet (SGP771)

• Model Number: SGP771
• SoC: Qualcomm Snapdragon 810
• CPU: 4x Cortex-A57 @2 GHz + 4x Cortex-A53
• GPU: Adreno 430 @600 MHz
• Display: IPS, 10.1″, 2560×1600, 299 ppi
• RAM: 3 GB
• Internal memory: 32 GB
• Support microSD cards(up to 128 GB)
• Mobile networks GSM, WCDMA, LTE Cat 6 (optional)
• Wi-Fi 802.11a/b/g/n/ac MIMO (2.4 + 5 GHz)
• Bluetooth 4.1, GPS/A-GPS/GLONASS/BDS
• Cameras: 5.1 MP front, 8.1 MP rear
• Micro-USB (supports MHL 3.0), Nano-SIM (optional), 3.5mm headphone jack
• Battery capacity: 6000 mAh
• Operating system: Google Android 5.0.2
• Size: 254 × 167 × 6.1 mm
• Weight: 389 g / 393 g (Wi-Fi/LTE versions)

Sony Xperia tablets have always been some of the most expensive tablets on the market, and the Z4 Tablet's specs truly reflect why that's the case.

	Sony Xperia Z4 Tablet	Sony Xperia Z2 Tablet	Samsung Galaxy Tab S 10.5	Samsung Galaxy Note 10.1 (2014)	iPad Air 2
Screen	IPS, 10.1″, 2560×1600, 299 ppi	IPS, 10.1″, 1920×1200 (218 ppi)	SuperAMOLED, 10.5″, 2560×1600 (287 ppi)	PLS, 10.1″, 2560×1600 (299 ppi)	IPS, 9.7″, 2048×1536 (264 ppi)
SoC (processor)	Qualcomm Snapdragon 810 (4x Cortex-A57 @2 GHz and 4x Cortex-A53)	Qualcomm Snapdragon 801 @2.3 GHz (4 Krait 400 cores)		Samsung Exynos 5 Octa (4 cores @1.9 GHz and 4 cores @1.3 GHz)	Apple A8X @1.5 GHz 64 bit (3 Cyclone cores) + M8 coprocessor
GPU	Adreno 430	Adreno 330	Mali-T628 MP6	Mali-T628 MP6	PowerVR GX6650
RAM	3 GB	3 GB	3 GB	3 GB	2 GB
Flash memory	32 GB	from 16 to 32 GB	16 GB	from 16 to 64 GB	from 16 to 128 GB
Memory card support	microSD (up to 128 GB)	microSD (up to 128 GB)	microSD (up to 128 GB)	microSD (up to 64 GB)	-
Connectors	Micro-USB (with MHL support), 3.5mm headphone jack	dock connector,	Micro-USB (with OTG and MHL support), 3.5mm headphone jack	Micro-USB (with OTG and MHL support), 3.5mm headphone jack	Lightning dock connector, 3.5mm headphone jack
Cameras	front (5.1 MP; video 1080p) and rear (8.1 MP; video 1080p)	front (2.2 MP; video 1080p) and rear (8.1 MP; video 1080p)	front (2.1 MP; video 1080p) and rear (8 MP; video 1080p)	front (1.2 MP), rear (8 MP, 1080p video shooting)	front (1.2 MP, video 720p) and rear (8 MP, video 1080p)
Internet		Wi-Fi 802.11a/b/g/n/ac MIMO (optional 3G and LTE)	Wi-Fi 802.11a/b/g/n/ac MIMO (optional 3G and LTE)	Wi-Fi, 3G (optional LTE)	Wi-Fi (optional 3G and LTE)
Wireless modules	Bluetooth, GPS/Glonass/BDS, NFC	Bluetooth, GPS/Glonass, IR port, NFC	Bluetooth, GPS/Glonass/BDS, IR port, NFC	Bluetooth, GPS.Glonass	Bluetooth, GPS
Battery capacity (mAh)	6000	6000	7900	8220	7340
Operating system*	Google Android 5.0.2	Google Android 4.4	Google Android 4.4	Google Android 4.3	Apple iOS 8.1
Dimensions** (mm)	254×167×6.1	266×172×6.4	247×177×6.6	243×171×7.9	240×170×6.1
Weight (g)	393	424	467	544	451
average price	T-12260248	T-10729481	T-10964274	T-10498126	T-11153496
Retail offers Sony Xperia Z4 Tablet (Wi-Fi version)	L-12260248-5
Retail offers Sony Xperia Z4 Tablet (LTE version)	L-12260250-5

*at the time of preparation of the corresponding article
**according to manufacturer's information

Sony's large-format tablet is not much different from its predecessor, released a year ago. The display resolution has been increased to the current level. The asset still has the most powerful SoC of the Snapdragon line, which has replaced several generations since then. The IR port and proprietary dock connector were eliminated as unnecessary, thanks to which the weight of the tablet began to fit into 400 g, which is very small for a ten-inch device. Other characteristics remained unchanged without significant changes.

Design

The Sony Xperia Z4 Tablet only comes with a charger. We received the tablet without it, in a regular white box, so let's get straight to the appearance. We received a black modification for testing; a white version is also available for sale.

The Xperia Z4 Tablet can be distinguished from the Z2 Tablet at first glance by the size of the display fields. The previous version was recognizable by its pronounced landscape orientation, which made it look somewhat disproportionate. The Z4 Tablet has become a little shorter and wider and, accordingly, more attractive.

With the new brim sizes, the device can be comfortably held with one hand on either side, which is facilitated by its low weight. Other large tablets are not so thought out in this regard. The manufacturer's logo and the placement of the front camera make it clear that the device is, after all, designed more for landscape orientation.

The front camera is located in the center, which is convenient. At the same time, the manufacturer's logo is neatly aligned along the edge of the display. On the opposite side there is an LED charging indicator. Such an interesting arrangement of front panel elements is distinguished only by large Xperia tablets; in the Z3 Tablet Compact everything is less original.

With the latest Sony devices The Xperia tablet has other design elements in common - contrasting glossy shockproof plastic corners. In addition, the Z2 Tablet had silver side edges perpendicular to the body, and now the tablet’s profile is slightly convex on all sides.

The back panel of the device is made of soft-touch plastic. This material provides excellent grip on the palm and good resistance to fingerprints. But if greasy marks do appear, you will have to scrub them off longer than usual.

In the left corner is the rear camera lens. Flash is not provided. Nearby is the NFC pairing zone. On the top edge the headphone jack barely fits into the body.

On the left, a silver power button contrasts with the dark body. It protrudes a little more than the adjacent volume buttons, so it is more convenient to use. But the rocker is quite prominent, there are no complaints about it either.

The microphone was taken upstairs. In principle, this is correct, since no one will hold a ten-inch tablet to their ear for a conversation, and when communicating via video chats, the top edge is not obscured.

Behind the long flap are microSD and Nano-SIM connectors (in the LTE version). If you pull the plastic tip sticking out of the slot, the sticker is removed from the device. It's written on it serial number and other device data. Thus Sony provides necessary information and doesn't spoil appearance. In the Xperia Z2 Tablet, all this information was stretched onto the silver edge, and the new solution looks sleeker.

There is also a small yellow button hidden here to force the device to turn off. The SIM card is installed in a removable tray.

C right side there is a Micro-USB connector, and next to it is a hole for one of the two stereo speakers. They provide high sound quality and a decent volume reserve, at the level of expensive mobile devices.

The implementation of speakers is far from the only advantage of the Sony Xperia Z4 Tablet. This device has incorporated all the successful changes made to the design of the line over the past couple of generations. As a result, we got a light, convenient and beautiful tablet. And besides, it is protected from external influences in accordance with the IP65 and IP68 standards, which implies complete protection from dust, sea waves, strong jets and the possibility of prolonged immersion to a depth of 1 m. Will further testing produce the same pleasant impressions?

Screen

The front surface of the screen is made in the form of a glass plate with a mirror-smooth surface that is scratch-resistant. Judging by the reflection of objects, The anti-glare properties of the screen are perhaps a little worse than those of Google Nexus 7 (2013) (hereinafter simply Nexus 7). For clarity, here is a photograph in which a white surface is reflected in the switched off screens of both devices (Sony Xperia Z4 is on the right, then they can be distinguished by size):

Both screens are dark, but the Sony screen is still a little brighter (its brightness in the photo is 115 versus 109 for the Nexus 7). Tripling reflected objects in Sony screen Xperia Z4 is very weak, this indicates that there is no air gap between the outer glass (also known as the touch sensor) and the surface of the matrix ( OGS type screen - One Glass Solution). Due to the smaller number of boundaries (glass/air type) with very different refractive indices, such screens look better under strong external illumination, but their repair in the case of cracked external glass is much more expensive, since the entire screen has to be replaced. On the outer surface of the screen there is a special oleophobic (grease-repellent) coating (very effective, slightly better than the Nexus 7), therefore fingerprints are removed much easier and appear at a lower speed than in the case of ordinary glass.

When manually controlling the brightness, its maximum value was about 450 cd/m², and the minimum - 3.8 cd/m². The maximum value is quite high, and, given the good anti-glare properties, the image on the screen should be clearly visible in bright daylight. In complete darkness, the brightness can be reduced to a comfortable level. However, Sony promised a 40% brightness increase relative to the Xperia Z2 tablet, but in reality it is only 50 cd/m², or 12.5%. That is, the fact of consumer deception takes place. Automatic brightness adjustment works based on the light sensor (it is located to the left of the front camera). IN automatic mode When external lighting conditions change, the screen brightness both increases and decreases. The operation of this function depends on the brightness adjustment position. If it is at maximum, then in complete darkness the auto-brightness function reduces the brightness to 14 cd/m² (normal), in an office illuminated by artificial light (about 400 lux) it sets it to 260 cd/m² (too much), in a very bright environment (corresponds to the lighting on a clear day outdoors, but without direct sunlight - 20,000 lux or a little more) increases to 450 cd/m² (to the maximum, which is what is needed). If the brightness slider is at half the scale (it is very non-linear - after 50% the brightness goes up sharply as the setting value increases), then the screen brightness for the three conditions indicated above is as follows: 12, 170 and 450 cd/m² (suitable values). If the brightness control is set to minimum - 6.8, 80, 450 cd/m². Eventually The auto-brightness function works absolutely adequately. Only at a very low brightness level does significant backlight modulation appear, but its frequency is very high, about 10 kHz, so no flickering of the screen is visible under any conditions.

This screen uses IPS type matrix. The microphotographs show a typical IPS subpixel structure:

For comparison, you can see the gallery of microphotographs of screens used in mobile technology.

The screen has good viewing angles without inverting shades and without significant color shift even with large gaze deviations from perpendicular to the screen. For comparison, here are photographs in which the same images are displayed on the screens of the Nexus 7 and Sony Xperia Z4, while the screen brightness is initially set to approximately 200 cd/m² (across the white field in full screen), and the color balance on the camera is forcibly switched to 6500 K .Perpendicular to the plane of the screens is a white field:

Note the good uniformity of brightness and color tone of the white field. And a test picture:

The colors on the Sony Xperia Z4's screen are oversaturated, skin tones are heavily red-shifted, and the color balance is noticeably different from the standard. Now at an angle of approximately 45 degrees to the plane and to the side of the screen:

It can be seen that the colors have not changed much on both screens, but on the Sony Xperia Z4 the contrast has decreased to a greater extent due to the strong bleaching of blacks. And a white field:

The brightness at an angle for both screens has noticeably decreased (by at least 5 times, based on the difference in shutter speed), but in the case of the Sony Xperia Z4 Tablet the drop in brightness is slightly less (brightness according to photographs is 233 versus 224 for the Nexus 7). However, the color tone did not change much. When deviated diagonally, the black field becomes very bright and acquires a violet or red-violet hue. The photographs below demonstrate this (the brightness of the white areas in perpendicular to the plane The direction of the screens is the same!):

And from another angle:

When viewed perpendicularly, the uniformity of the black field is very good:

Contrast (approximately in the center of the screen) is high - about 900:1 . The response time for the black-white-black transition is 21 ms (11 ms on + 10 ms off). The transition between halftones of gray 25% and 75% (based on the numerical value of the color) and back takes a total of 33 ms. The gamma curve, constructed using 32 points with equal intervals according to the numerical value of the shade of gray, did not reveal a blockage either in the highlights or in the shadows, and the index of the approximating power function turned out to be 2.15, which is close to the standard value, while the real gamma curve deviates slightly from power dependence:

The tablet does not have any dynamic adjustment of the backlight brightness depending on the nature of the displayed image, which is very good.

The color gamut is noticeably wider than sRGB:

Let's look at the spectra:

They are very atypical. As they write on the Sony website, in this screen (with the name Triluminos) LEDs with a blue emitter and green and red phosphor are used (usually a blue emitter and a yellow phosphor), which, in combination with special matrix filters, allows for a wide color gamut. Unfortunately, as a result, the colors of images - drawings, photographs and films - oriented to the sRGB space (and these are the vast majority) have unnaturally high saturation. This is especially noticeable on recognizable shades, such as skin tones. The result is shown in the photo above.

The balance of shades on the gray scale is poor, since the color temperature is significantly higher than the standard 6500 K. The balance is distorted, of course, due to an excess of blue and green components, which reduces power consumption at the same brightness. True, the deviation from the blackbody spectrum (ΔE) is less than 10, which is considered an acceptable indicator for a consumer device. At the same time, the variation in color temperature and ΔE is small, which has a positive effect on the visual perception of color balance. (The darkest areas of the gray scale can be ignored, since color balance there is not very important, and the error in measuring color characteristics at low brightness is large.)

This tablet has the ability to adjust the color balance by adjusting the intensities of the three primary colors.

That's what we tried to do. The result is data signed as Corr. on the charts above. As a result, we significantly reduced ΔE and set the white point to 6500 K:

However, at the same time, the maximum brightness decreased to 316 cd/m², and the contrast decreased accordingly, but this correction did not reduce the oversaturation of colors.

If someone still finds the image on the screen of this tablet insufficiently saturated and juicy, then you can turn on the proprietary mode X-Reality for mobile. In this mode, saturation and contour sharpening are software enhanced, and there are fewer distinguishable gradations of shades in the area of ​​saturated colors. There are also Extreme brightness mode, in which the color contrast is further enhanced.

Let's show alternately (you need to click on the pictures) all three modes on the test image:

Switch off:

Let's summarize. Brightness adjustment range of this screen wide, and with anti-glare properties everything is in order, which allows Use your tablet comfortably both on a sunny day outside and in complete darkness. Acceptable use mode with automatic brightness adjustment, which works absolutely adequately. The advantages also include an effective oleophobic coating, no flicker or air gap in the screen layers, good black field uniformity and high contrast. To the disadvantages - strong highlighting of black color when the gaze deviates from perpendicular to the surface of the screen. Everything is bad with color rendering, because colors are oversaturated (skin tones are especially affected) and color temperature is very high. The presence of appropriate adjustments allows you to adjust the balance to almost ideal, but at the expense of a significant reduction in brightness and contrast, and the problem with oversaturated colors still remains. Taking into account the importance of characteristics specifically for this class of devices (and the most important thing is the visibility of information in a wide range of external conditions) The screen quality can be considered high. However, for those who want to watch movies and view/display photos on a tablet, we advise you to refrain from purchasing devices with a Triluminos screen, at least until Sony introduces an sRGB mode (and judging by trends, it will probably , will close the mobile division, which will do everything right).

operating system

Sony Xperia Z4 Tablet runs under operating system Google systems Android 5.0.2. During testing, we used the basic firmware build 28.0.A.267, for which no updates were received. From 32 GB internal memory Only 22.2 GB is available to the user, that is, almost a third is consumed by the system. Moreover, this, apparently, is the “merit” of the firmware itself, since the set of pre-installed software is small.

Sony limited itself to working on the proprietary interface in accordance with the requirements of “material design”. Otherwise, the manufacturer did not bring anything new to the interface, adopting standard elements Lollipop.

Among the interesting software is an exclusive version Garmin navigator for Xperia, FM radio and, of course, the proprietary Remote Play service, which allows you to wirelessly broadcast game content from the Playstation 4 directly to the tablet. We talked about its work in the review of Xperia Z3 Tablet Compact.

The operation of the operating system does not deserve any comments. Turning on the tablet takes approximately 35 seconds.

Platform and performance

The Sony Xperia Z4 Tablet is powered by Qualcomm's most powerful single-chip system - Snapdragon 810. It is very popular among flagship mobile devices; we have already seen it in HTC One M9 and LG G Flex 2.

This single-chip system includes eight processor cores, combined using ARM big.LITTLE technology. For demanding tasks, it uses four Cortex-A57 cores (ARMv8-A architecture), accelerating to 2 GHz. In more gentle scenarios, four energy-efficient Cortex-A53 cores (also ARMv8-A architecture) are used. There is support for a 64-bit instruction set. The graphics are handled by the Adreno 430, the most powerful Qualcomm GPU. The Snapdragon 810 was presented at CES 2015 in January, and you can also read more about it in the report from the exhibition.

The single-chip system is complemented by 3 GB of RAM and 32 GB of permanent memory - Sony didn’t save money here either, but it didn’t bring any surprises either. Of course, the most interesting thing will be to compare the performance of the Z4 Tablet with iPad Air 2, but also tablets Samsung Galaxy also shouldn’t be written off in advance.

In browser tests, the victory remains with the Z4 Tablet, although the lag behind the latest iPad Air 2 is slight. Android analogues are far behind; the high frequency of their processors does not help.

Strangely, MobileXPRT, which is usually trustworthy, rated the Z4 Tablet's performance as the worst. In Antutu, the tablet confidently surpassed the fifty thousand mark, being almost one and a half times faster than its competitors. And in 64-bit mode it turned out even more - 56482 points.

In multi-platform Geekbench 3, our hero also leaves the bulk of his competitors far behind. But here the iPad Air 2 enters the competition, which is ahead of the Z4 Tablet by the same significant margin. The line with the Geekbench 3 results clearly demonstrates: happiness is not in megahertz.

Let's now turn to gaming benchmarks.

	Sony Xperia Z4 Tablet (Qualcomm Snapdragon 810)	Sony Xperia Z2 Tablet (Qualcomm Snapdragon 801)	Samsung Galaxy Tab S 10.5 (Samsung Exynos 5 Octa)	(Samsung Exynos 5 Octa)	Apple iPad Air 2 (Apple A8X)
Epic Citadel (Ultra High Quality)	53.1 fps	53.4 fps	52.6 fps	26.0 fps	-
GFXBench T-Rex HD (Onscreen)	33.7 fps	27.3 fps	14 fps	14 fps	52.5 fps
GFXBench T-Rex HD (Offscreen)	48.6 fps	27.5 fps	22.9 fps	23 fps	70.6 fps
3DMark Ice Storm Extreme	Maxed out!	Maxed out!	9159	8732	Maxed out!
3DMark Ice Storm Unlimited	23919	19114	13451	13601	21768
Bonsai Benchmark	4028 (57.5 fps)	3767 (53.8 fps)	-	-	-

Tests confirm the advantage of the new product on the Snapdragon 810 “among its own.” This is especially noticeable when scenes are run at the same resolution. As for the iPad Air 2, the victory here remains with the Apple product: it more than compensates for the slight lag in browser benchmarks and synthetic 3DMark due to Geekbench 3 and GFXBench, which inspire more confidence.

Now let's launch real games.

Modern Combat 5: Blackout	works fine
Call of Duty: Strike Team	slows down a lot
Asphalt 8: Take Off	works fine
N.O.V.A. 3	works with artifacts
Dead Trigger 2	works fine, high settings
GTA: San Andreas	works fine, maximum settings
Need for Speed:No Limits	works fine
Assassin's Creed: Pirates	does not work
Deux Ex: The Fall	works fine
World of Tanks: Blitz	works fine

We didn't expect to encounter so many compatibility issues. Call of Duty not only takes a long time to load, but also slows down a lot, preventing you from playing normally. Assassin's Creed starts, but does not respond to clicks. N.O.V.A. 3 runs very smoothly, and the only problem is that the information about the current weapon is not displayed in the upper right corner. The Xperia Z4 Tablet could have been a powerful and lightweight gaming tablet, but, alas, it failed. Perhaps all these problems arose due to the fact that we had an engineering sample for testing.

Below is a thermal image of the rear surface obtained after 10 minutes of running the battery test in the GFXBenchmark program:

It can be seen that the heating is localized in the upper part of the device, approximately under the front camera, which apparently corresponds to the location of the SoC chip. The heating is not spot-on, which indicates the use of elements that distribute heat. According to the heat camera, the maximum heating was 44 degrees.

Playing video

Additionally, the MHL interface was tested. To test it we used a monitor ViewSonic VX2363Smhl, supporting direct MHL connection (in version 2.0) using a passive adapter cable from Micro-USB to HDMI. In this case, output via MHL was carried out at a resolution of 1920 by 1080 pixels at a frequency of 60 frames/s. Regardless of the actual orientation of the tablet, images are displayed on the tablet and monitor screens only in landscape orientation with the connector on the tablet to the right. In this case, the image on the monitor fits exactly within the boundaries of the display area in height and one-to-one repeats the image on the tablet screen in the interpolation version from 2560 × 1600 to 1728 × 1080 pixels, that is, with vertical black stripes on the sides:

Traditionally, in the case of Sony, a tablet connected via MHL can act as a remote control for a TV, if the latter supports such a function. Sound via MHL is output and has good quality. In this case, sounds are not output through the loudspeaker of the tablet itself, and the volume is not adjusted using the buttons on the tablet body, but is turned off. In our case, the tablet with the connected MHL adapter, judging by the charge indicator, was charging (but, in fact, it was rather discharging).

Next, using a set of test files with an arrow and a rectangle moving one division per frame (see “Method for testing video playback and display devices. Version 1 (for mobile devices)”), we checked how the video is displayed on the screen of the tablet itself. Screenshots with a shutter speed of 1 s helped determine the nature of the output of frames of video files with various parameters: the resolution varied (1280 × 720 (720p), 1920 × 1080 (1080p) and 3840 × 2160 (4K) pixels) and frame rate (24, 25, 30, 50 and 60 fps). In the tests we used the MX Player video player in the “Hardware” mode. The results of this (block entitled “Tablet Screen”) and the next test are summarized in the table:

File	Uniformity	Passes
Tablet screen
4K/30p	Fine	No
4K/25p	Fine	No
4K/24p	Fine	No
1080/60p	Fine	few
1080/50p	Fine	No
1080/30p	Fine	No
1080/25p	Fine	No
1080/24p	Fine	No
720/60p	Fine	a lot of
720/50p	Fine	few
720/30p	Fine	No
720/25p	Fine	No
720/24p	Fine	No
MHL (monitor output)
4K/30p	Fine	No
4K/25p	Fine	No
4K/24p	Fine	No
1080/60p	Great	No
720/24p	Fine	No

Note: If in both columns Uniformity And Passes Green ratings are given, this means that, most likely, when watching films, artifacts caused by uneven alternation and frame skipping will either not be visible at all, or their number and visibility will not affect the viewing comfort. Red marks indicate possible problems associated with the playback of the respective files.

According to the criterion of frame output, the quality of playback of video files on the screen of the tablet itself is good, since frames (or groups of frames) can output with a more or less uniform alternation of intervals and without skipping frames, with the exception of files with 50 and 60 fps, in which case there is a high probability that some frames will be skipped. In comparison with the same Sony Xperia Z3 Tablet Compact, we have a degradation in quality, apparently due to unoptimized software. The displayed brightness range is equal to the standard range of 16-235, all shade gradations are displayed in shadows and highlights. When playing video files with a resolution of 1920 by 1080 pixels (1080p), the image of the video file itself is displayed exactly along the wide border of the screen, with inevitable interpolation.

With a monitor connected via MHL, when playing video, the monitor displays an exact copy of the tablet screen, that is, again with black stripes on the sides. Full HD clarity, alas, is not achievable. The brightness range displayed on the monitor is the standard range of 16-235. The results of the monitor output tests are shown in the table above in the “MHL (monitor output)” block. The output quality is no better than on your own screen.

The conclusion is typical: an MHL connection can be used for games, watching movies, surfing the web and other activities that benefit from an increase in screen size, but only with black bars on the sides (and in the case of video, there will most likely be bars at the bottom and from above, or the picture will have to be cropped by selecting the appropriate mode).

Wireless network support and OTG mode

Sony Xperia Z4 Tablet is available in two versions, differing in support for mobile networks. We tested a more expensive modification (SGP771RU), where this support is present. Users have the latest GSM, WCDMA bands, as well as fast LTE Cat 6 at their disposal. The tablet can also make calls and send SMS using standard Xperia applications.

Through operating system You can set up an autoresponder. The numeric keyboard supports search by Smart Dial names, and the alphabetic keyboard supports continuous input.

Calls are made in speakerphone mode. The timbre of the interlocutor's voice remains recognizable, and there are no problems with speech transmission.

Internet access is also possible via dual-band Wi-Fi 802.11a/b/g/n/ac (with MIMO). Sony Xperia Z4 Tablet, like other solutions based on Qualcomm Snapdragon, is distinguished by fast operation of GPS, Glonass and Chinese BDS. Location determination occurs in a matter of seconds after turning on navigation. In addition, the list of wireless modules includes Bluetooth 4.1.

Support for connecting external drives via USB OTG is announced on the official website, but for some reason it is not implemented on our copy. Perhaps because we were dealing with an engineering sample.

Cameras

The resolution of the Z4 Tablet cameras is 8.1 and 5.1 megapixels. Anton Soloviev commented on their work.

This camera allows you to take very good pictures, even by smartphone standards. Excellent sharpness and moderate software processing add up to a pleasant image. It is also impossible not to note the good detail in different plans, despite the low resolution. Although the camera spoils the thin lines a little with software processing, this is noticeable only at high magnification.

As a result, the camera is well suited for various scenes, even if someone seriously decides to shoot with a tablet.

The camera can shoot video in Full HD format. An example of the video is shown below.

The video is enough High Quality. Freeze frames are sharp despite the average frame rate.

Autonomous operation

The Sony Xperia Z4 Tablet has the same battery capacity as the Sony Xperia Z2 Tablet. The advantage of the new tablet is that, unlike the Z2 Tablet, which had only four powerful cores, there are also four energy-efficient ones. ARM big.LITTLE technology allows you to quickly switch between these quartets, based on the resource intensity of the tasks.

	Sony Xperia Z4 Tablet (Qualcomm Snapdragon 810)	Sony Xperia Z2 Tablet (Qualcomm Snapdragon 801)	Samsung Galaxy Tab S 10.5 (Exynos 5 Octa)	Samsung Galaxy Note 10.1 (2014) (Samsung Exynos 5 Octa)	iPad Air 2 (Apple A8X)
Battery capacity (mAh)	6000	6000	7900	8220	7340
Reading mode (brightness 100 cd/m²)	16 h 40 min (Moon+ Reader, auto-scrolling	14 h 30 min	about 12 o'clock	15 h	about 13:00
Video playback 720p (brightness 100 cd/m²)	14 h (MX Player over the network)	10 h 30 min (Youtube)	about 9 hours (Youtube)	9 hours 50 minutes (Youtube)	around 11:20 (Youtube)
Epic Citadel Guided Tour (brightness 100 cd/m²)	6 h 34 min	7 hours	6 hours 40 minutes	4 hours 30 minutes	a little over 6 hours

Duration battery life clearly shows which scenario the Cortex-A57 worked in and which the Cortex-A53 worked in. The use of the latter allowed the Z4 Tablet to outperform all competitors when reading and playing videos. Battery life in the gaming test is also quite good - worse than that of the Z2 Tablet, but better than that of the iPad Air 2 (with a smaller battery capacity).

The tablet arrived to us for testing without charger, so we did not measure the charge recovery time.

conclusions

The Sony Xperia Z4 Tablet did not disappoint expectations and turned out exactly the way we are used to seeing Xperia tablets - with an excellent design, high-quality screen and camera, as well as powerful processor. But there was still an unexpected fly in the ointment. Compatibility with games leaves much to be desired, and we hope that this drawback is associated specifically with our specific sample or, in extreme cases, will be eliminated by firmware updates (as well as problems with video playback when high frequency frames). Alas, from the low stability of black color when the gaze deviates from perpendicular to the screen software can't be saved. The Z4 Tablet also stood out for its battery life, outshining all its competitors.

Today we are dealing with the most advanced tablet (at least in the Android segment) in terms of the totality of all characteristics, and competitors will have to try hard to seize the palm. Although, looking at the market news feeds, which are full of exclusively budget devices, you begin to doubt that such competitors will even exist.