White tablet 16 GB with microSD support. Memory cards in Lenovo devices. Which memory card is best for an Android or tablet?

Any modern tablet has built-in memory. But, as a rule, this memory is not enough to store all the necessary photos, video and audio recordings, applications, documents and other files. In this case, it becomes necessary to purchase a memory card. To select the right card, you must be guided by several criteria:

Write speed;

Volume

Most tablet users pay attention only to this parameter. The choice of one volume or another depends on the preferences of the buyer. The user must calculate how many video and audio files he plans to store on his gadget. They take up most of the tablet's memory. This is especially true for recordings in HD and FullHD form. 15 minutes of such a video will take 1 Gigabyte of memory. And in general, you should understand that over time, hundreds of different files will accumulate on your gadget, so when purchasing a memory card, it is better to immediately pay attention to larger options.

To get an approximate idea of ​​the capacity of a particular memory card, check out the following table:

Type

There are 3 main types of memory cards for tablets: microSD, SDHC and SDXC. The difference between these types is the card's capacity. MicroSD is distinguished not only by its small size, but also by its minimum capacity (up to 4 GB). SDHC cards are designed to store 32 GB. But the SDXC format is considered super-capacitive (up to 64 GB). However, it is worth knowing that some tablets do not support this format, and therefore before purchasing a memory card of this type, you should check about the possibility of installing it on your gadget.

Write speed

Most buyers ignore this criterion - but in vain. The recording speed is indicated by the inscription UHC. It has different classes from 1 to 10. The numbers in the abbreviation will indicate the number of megabits that can be recorded in one second. High speed is essential when recording formats such as HD or Full HD to the card.

Degree of protection

Manufacturers indicate the degree of protection on the packaging. The card must be protected from x-rays, temperature changes and shock.

Tablet technology is developing at a rapid pace, tablets have received new capabilities, processing power has increased, and storage media has become smaller and more spacious than before. Memory cards have recently become cheaper, while their capacity is increasing. This trend in the tablet market has given new opportunities to game and application developers.

Users also received new opportunities. Music lovers can now easily load all their favorite albums onto a memory card, and those who like to watch full-length movies using a tablet will be able to save dozens of hours of video on one memory card. How should you choose a memory card? What do you need to know and what features need to be taken into account?

Using memory cards

Today, few people can imagine their life without tablets. These electronic devices have become cheaper and more powerful, and their storage capacity has become more spacious. The first and most important accessory that a user purchases with a tablet is a memory card. Without a drive, it is impossible to fully use the tablet.

Built-in memory is not always enough. By expanding the memory, the tablet's capabilities increase several times: from now on, the user can install more games and applications from the Play Market or third party resource; can record more music on the tablet, more videos.

Many users make mistakes. In order not to make a mistake and purchase a 100% suitable memory card for your tablet, you need to take into account several extremely important points.

Speed ​​classes

Although many drives may look the same, there is an important point that you should always pay attention to.

Attention: when purchasing, pay attention to the speed class of the memory card!

Speed ​​is the most important parameter that you should pay attention to before purchasing a drive. The higher the speed, the faster the tablet will be able to save information, play large video files, etc.

Card classes and their write speed are presented in the table. Please note that read speeds may be higher than advertised, but write speeds are generally always as advertised.

SD Class Write speed
SD Class 2 From 2 MB/s and above
SD Class 4 From 4 MB/s
SD Class 6 From 6 MB/s
SD Class 10 From 10 MB/s
SD Class 12 From 12 MB/s
SD Class 16 From 16 MB/s

Many new users get confused when they come across the “SDHC” designation when choosing a drive for their device. You need to know what the SDHC format is and what advantages it has. SDHC is the next generation regular SD cards, accordingly, MicroSDHC are drives smaller size, used by most modern tablets. This format supports up to 32 GB, which means you can store more information in the same card size.

Attention: before purchasing, be sure to make sure that the capacity of the card you are purchasing is supported by your tablet!

A common mistake made by users is to buy a card and later find out that the tablet does not support this capacity. Study the characteristics of the tablet before you go to the store to buy a drive!

Where to buy a memory card

Many online stores currently offer to purchase a memory card inexpensively and with delivery.

Please note: cards with less capacity are the least profitable in terms of the cost of one gigabyte; If you compare the cost of 1 GB in a four-gigabyte card and in an 8-gigabyte card, you will be convinced that it is more profitable to buy 8 GB!

For some reason, many users sometimes completely ignore this nuance, but in reality it is extremely important! The difference in price is sometimes quite impressive (up to 25% - 75% loss of budget for the user)!

Below are web resources where you can order a memory card in Russia and Ukraine:

  1. http://vk.cc/3xlFjQ;
  2. http://vk.cc/3xlFpp;
  3. http://vk.cc/3xlFvC;
  4. http://vk.cc/3xlFBe;
  5. http://vk.cc/3xlFF4.

Possible problems with the drive

Sometimes it happens that the device refuses to recognize the inserted card. What needs to be done in such cases? In 90% of cases, these problems are caused by incompatibility of the card with the touch device.

The most common causes of conflict between a touch gadget and a memory card:

  1. The micro SD type does not match the one supported by the tablet;
  2. The card capacity exceeds the maximum allowable for your tablet model;
  3. There are certain problems with the firmware on your tablet;
  4. The card is too littered with various files that affect its performance (most often files located in the root directory affect performance).

The last problem, as a rule, can be resolved quite simply. Connect the “junk” memory card to a desktop PC using a card reader, then delete the files that prevent the tablet from properly recognizing the card, or format it using Windows tools.

When you connect a memory card to your tablet, you don’t have to wait for the device to automatically detect your storage device. Open the Settings menu => microSD memory. If the card is visible in this menu, but is not available in Explorer, try formatting it using a tablet. Sometimes this can be done even if there is a problem with the files.

Working with the tablet's internal memory

Moving process

The internal memory of many models is low, however, any user should know how to work with it: how to move data (files and folders) from the integrated memory to a memory card without using a desktop PC.

Attention: some icons in the screenshots may differ from your device, depending on the model and version of Android!

To move or copy a file from internal memory, first make sure that a card formatted for FAT32 is inserted into the tablet. Also make sure that there is enough free space on the card. Go to: Applications (Menu) => My files. Select the required file or folder. Press it and do not release it for 2-4 seconds. A check mark will appear. Press “Menu”; You will see a window with possible options.

Click on Move/Cut (specific arrow/scissors). When copying - “two sheets superimposed on one another.” Specify the “SD card” folder. Specify your destination, then confirm your action.

Moving stages

Memory expansion via microSD

The need to install a flash drive in a tablet, smartphone or any other device running under Android control, appears in most cases.

The reason may be a budget device model that does not have enough built-in memory, or increased user requests for the required space to store personal files. To understand which flash drive to choose for Android, you need to understand their types and characteristics.

Types of flash cards

After many attempts to create a reliable and high-speed storage medium, Flash memory was developed, which completely replaced outdated floppy disks and optical disks. Modern drives can be divided into two groups, each of which can become good option for use with Android:

  • USB drive. The most common type that is used in the daily work of millions of people. High data processing speed, miniature size and mobility make it an indispensable tool. Connection to a computer, tablet or smartphone is via an external USB port. In some cases, an adapter cable is required.
  • Flash card. The optimal storage medium for everyone mobile devices running Android, as well as any other operating system. The flash card has miniature dimensions, allowing it to be placed in a gadget without the need to disconnect it. The data exchange speed of these storage media is very high.

For gadgets, the option with a flash card will be much more practical. They have this opportunity implemented using the appropriate connector. Further choice will depend on the characteristics of the memory card itself and the capabilities of the device.

Characteristics of memory cards

All modern digital devices have a number of characteristics that determine the possibility of using flash memory. Majority modern gadgets use SD cards. But even here the choice is not as simple as it seems. You need to choose the right flash drive based on its main characteristics:

  • Form factor. The first criterion that determines the ability to physically connect the card to the gadget. There are three possible versions: SD, MiniSD and MicroSD.

  • Volume. The choice depends on the user's requirements. Manufacturers offer a wide range of flash drives with capacities from 1 GB to 2 TB. For ease of selection, SD cards are divided into groups: SD 1.0, SD 1.1, SDHC, SDXC.
  • Class. Memory quality and data processing speed (read/write) depend on the class of the flash card (details). Sometimes this parameter is replaced by a multiplier that corresponds to a specific class.

Detailed indicators of the memory card class:

  • Class 2 – speed 2 MB/s, multiplier 13x.
  • Class 4 – 4 MB/s, 26x.
  • Class 6 – 6 MB/s, 40x.
  • Class 10 – 10 MB/s, 66x.
  • Class 16 – 16 MB/s, 106x.

IMPORTANT! If the flash drive will be used to record video, then you need to choose the most high class. This will allow you to record video in HD quality.

After studying all the characteristics, you can easily understand which flash drive you need to choose for your smartphone. But even here there are some limitations that are related to the technical capabilities of the device.

Choosing a flash drive for a smartphone

The user cannot always get what he dreams of. When buying a memory card for your gadget, you need to take into account its technical features:

  • Supports flash cards of a certain size. Most devices have a limit on the amount of memory they can use. These characteristics can be found in the technical data sheet. Many devices allow you to expand the volume up to 64 GB; the option of using 128 GB is rarely possible.
  • Power battery. Flash cards with a large amount of memory consume significantly more energy, so the smartphone will. To balance the consumption, you need to settle on the optimal size of the flash drive. You should not purchase 64 GB if you will use a maximum of 8 GB.

The purchase of any product must be approached responsibly. Selecting the appropriate memory card will not only save your budget, but will also open up new possibilities for your favorite smartphone.

Any device has built-in memory to install applications, download videos and music, save books, photos and other files. But its size is not rubber and runs out very quickly. Moreover, part of the built-in memory is always occupied by operating system files and pre-installed applications. There is only one way out - buy external storage. Now let’s figure out how to choose a memory card for a tablet and what to look for when buying.


All memory cards are available in standard sizes. There are three of them in total, each of which is intended for use on certain devices:

  • MicroSD is one of the most popular storage formats, which is often used in phones, tablets, players and others. portable devices. It is compact and the size is only 1.1x1.5 cm;
  • MiniSD - not as popular a type as the previous one, larger in size - 2.5x2 cm. Found in MP3 players and some phone models;
  • SD is the most popular and actively used flash drive size. It is used when working with cameras, tablets, video cameras and recorders, as well as laptops and even computers. Standard size- 3.2x2.4 cm.

IMPORTANT. If you are going to buy a microSD with an adapter and use it as a standard SD card, then it is better not to do this. Most often, micro-flash drives work slower than standard ones, so it will not be possible to record and play back, for example, FullHD video using such media. So listen to manufacturers' recommendations regarding removable storage devices and buy only those that are compatible with your devices.

Speed: does it matter?

Many people, when choosing a memory card, do not pay attention to the speed indicator. But in vain. This is one of the most important characteristics, which should not be ignored. After all, the higher this indicator, the faster your tablet will save and transmit information, play large files, and so on.

To find out the read and write speed of a flash drive, you need to look at the device itself. The manufacturer often denotes this indicator by a multiplier or sets the class of the memory card:

  • class 2 - recording and playback of standard definition video, minimum speed 2 MB/s;
  • class 4 - recording and playback of high-resolution video, including FullHD, minimum speed 4 MB/s;
  • class 6 - recording and playback of FullHD video, minimum speed 6 MB/s;
  • class 10 - recording and playback of FullHD video, minimum speed 10 MB/s;
  • class 12 and class 16 - work with FullHD video with a minimum speed of 12 and 16 MB/s, respectively.

There are two more speed classes for cards that record and reproduce large streams of information in real time. These are UHS Speed ​​Class 1 with a minimum speed of 10 MB/s and UHS Speed ​​Class 3 with a minimum write speed of 30 MB/s and the ability to play files in 4K format.

IMPORTANT. You shouldn't buy the latest and greatest flash drive and hope that it will work perfectly on your tablet. There is a risk that it will simply be incompatible with the device. To avoid this and immediately determine which memory cards are best for your tablet, look in the instructions to see which class of drives will ensure optimal performance.

Generations of memory cards

There are several generations of memory cards for tablets and other devices. They are listed below in order of backward compatibility. That is, if the device works with SDHC flash drives, then it will be compatible with SD, but will not be able to recognize the SDXC card.

  1. SD is the most common and accessible digital card format, maximum volume- 4 GB, and data transfer speed - 12.5 MB/s;
  2. SDHC is the next type, where the maximum information capacity is 32 GB, and the information transfer speed is also 12.5 MB/s;
  3. SDXC is a later new generation format that does not work with all operating systems, but provides a maximum capacity of up to 2 TB of information and a data transfer speed of 25 MB / s.

Here the characteristics indicate the maximum permissible capacity values, but they will not always be the same. Exact information can be found on the manufacturer’s official website in the specifications of the selected memory card model or on a special sticker with characteristics on the packaging.

Extra options

We have already listed all the most important parameters for choosing a memory card for a tablet. There are still small details that should not be discounted. This concerns the number of write and rewrite cycles of the drive and its protection.

Recording and rewriting

If we talk in simple language, then all the information on memory cards is contained in special recharged cells. Of course, they may not work forever, but according to manufacturers, if you write down information, it will be stored on a flash drive for 10 years. The problem is that flash drives are bought for just another reason - to constantly write something, delete it, and write it again. That is, after such processes, each cell loses more and more of its electrical potential, and failure approaches.

Manufacturers provide for their memory cards the number of possible write and rewrite cycles from 10 to 100 thousand. To find out the exact number for the flash drive you have chosen, you need to look at this information on the packaging.

Protection

Your flash drives not only perform worse over time, but are also subject to negative external influences. So, not the last indicator when choosing a memory card for a tablet is the degree of its protection. In most cases, manufacturers offer models that are protected from shock and X-ray radiation, as well as indicating the optimal temperature conditions for operation. Much less common are instances that have the function of restoring accidentally deleted files or have an antivirus installed.

Results

Now you know what parameters to look for when choosing a memory card for your tablet, and what is most important here. After all, it is not always the most expensive and newfangled copy that will work best on your device. Approach the selection process pragmatically and prudently, so as not to spend too much, but to buy the perfect one. Agree, studying the characteristics takes a few minutes. Which may subsequently save money, time, and even nerve cells.

Do you have your own secrets for choosing a flash drive for your tablet? Tell us about them in the comments.

Sooner or later, almost any owner of a smartphone, tablet, and now, increasingly, a laptop, is faced with the question of buying a memory card and using it to expand the built-in memory of his device, the volume of which is no longer enough for him.

However, many of us come to the store and find on the counter a huge assortment of memory cards, many of which, with the same capacity, for some reason have completely different prices, and when the seller asks: “What class of card would you like to buy?” They almost fall into a stupor. Today we would like to help you make sense of it all.

First of all, you should know that memory cards differ from each other not only in the amount of information (photos, videos, documents, applications, etc.) that can be recorded on them, or in capacity, but also in the speed at which all this data is stored on them can be written (and subsequently read).

Depending on the capacity, cards are divided into types SD, SDHC and SDXC

SD cards have capacities from 128 MB to 2 GB and are sold formatted in FAT16 format. These cards will work in all devices that support SD, SDHC, or SDXC.

SDHCcards(SD High Capacity or High Capacity) are SD cards with capacities from 4 GB to 32 GB. Their initial format is FAT32.

SDHC cards work differently than standard SD cards and will most likely not work on older devices manufactured before 2008.

SDXCcards(Extended Capacity) have capacities from 64 GB to 2 TB and are shipped from the factory formatted in exFAT

Most devices launched after 2010 should be compatible with SDXC memory cards, but not all OS understand exFAT format, so sometimes after purchase they have to be reformatted to FAT32, NTFS or another format.

Depending on the speed of their operation, memory cards are divided into so-called “classes”

Class 2, 4, 6, 10 memory cards

UHS Class 1 or 3 memory cards

Memory cards class V6, V10, V30, V60, V90

Class A1 or A2 memory cards

Cards with a higher class number have a higher speed.

It is interesting that if the first two classes, which appeared earlier than the others, were characterized mainly by the speed of writing and reading data to the card, then class V determines the format or speed of the video (Video speed) that can be recorded on these cards, and class A is generally the launch speed class Applications speed on them.

A-class cards appeared quite recently (the official announcement of the first A1 cards took place in January of this year, 2017) and you will find more detailed information about them in this material.

The specifications for Class A2 cards were described in February 2017 and the corresponding cards will have speeds in the range of 4000 operations per second when reading, 2000 operations per second when writing, and their sequential read / write speed should be at the level of 10 MB / sec.

How to find out the speed class of a memory card?

The speed class is printed on the front side of the card, in the same place as its capacity and type. This is what the icons of different classes look like:

Class A memory cards are marked with the following icon:

How to choose a memory card?

First of all, you need to decide what your memory card will mainly be used for: to record videos, store photos and other information, or whether you will install games and other applications on it.

In the first case, if you will use the card mainly for recording video, then the faster the card you have, the higher quality video you will be able to record on it.

For example, to record video in HD or Full HD format, you will need a card with a recording speed ranging from 4 to 30 MB per second. But recording video in 4K format will require a speed card from 10 to 60 MB per second.

The following table will help you understand what class of card to record video of what quality you need to buy:

If you expect to store photos and documents on a memory card, then any modern memory card will suit you: for these purposes it’s super high speeds no entries required. But the best thing, of course, is to choose a card “with a reserve” whose class corresponds to the fourth or fifth line of the table given above.

For those who plan to use a memory card to install games and other heavy applications on it, it is recommended to use memory cards of class A1 or A2, but they are still very rare today, and if you are looking for an alternative, you better be guided by the principle: “the faster, the better.” better". Of course, you need to understand that the faster the card, the more expensive it is.