Experience when buying microSD cards for mobile devices

Most phones sold today come with Memory in 16 GB or 32 GB but part of this memory is attached to the operating system. Cheaper devices usually have less than 8GB of storage. If you store a lot of music, pictures, videos or games on your phone, you may find your device’s available space too limited for you to use. Therefore, you need to buy an external storage device that is a MicroSD card, but you do not know which type is best.

Many smartphones have theft slots MicroSD memory card except for Moto X 2014 and Samsung Galaxy S6. Among the smartphone devices that can support memory cards up to 128GB, far beyond the needs of most users. So what you need to know before buying a card microSD? Which types are right for you? You will find the answer below.

Differences between microSD cards

MicroSD card classified by storage capacity and transfer speed. Card classified as SD (Secure Digital) range in size from 128 MB to 2 GB. SDHC (Secure Digital High Capacity) cards in the capacity range from 4 GB to 32 GB. Capacity of SDXC (Secure Digital Extended Capacity) is a card up to 2 TB.

Cards are also divided into classes based on write speed. There are 6 main categories: 2, 4, 6 and 10, UHS 1 and 3. The table below shows the minimum data transfer rates for each class:

Card type Minimum data transfer rate Level Recommend max
UHS 3 30 MB/s High speed 4K and 2K . video recording
UHS 1 10 MB/s High speed HD, Full HD video recording and continuous photography
Class 10 10 MB/s High speed HD, Full HD video recording and continuous photography
Class 6 6 MB/s Average speed Record HD and Full HD video
Class 4 4 MB/s Average speed Record HD and Full HD video
Class 2 2 MB/s Low speed Video recorded in HQ

Is my phone compatible with a microSD card?

As we said in the introduction, many phones accept memory cards, but some don’t. To find out if your phone has a microSD card slot, please follow the following points:

  • Check your phone and look for the descriptions “SD” or “microSD”. This will indicate where your phone’s memory card slot is.
  • Refer to the instructions and see if it has a section on the memory card. This will show where it is, what types of cards it accepts and how to insert the card into the device.
  • See the manufacturer’s website for your device’s specifications. They will show you if it has a microSD slot.
  • Check out a website that specializes in mobile technology, such as xaiandroid.com.

How do I choose the best card?


Choose microSD card for your device is based on two criteria: capacity and speed. If you plan to buy a card just to save documents, 8 GB or 16 GB should be enough. However, if your intention is to store a lot of photos and videos, the higher the storage capacity, the better. At this point, your choice will be determined by your budget, because the card microSD with large storage capacity is usually more expensive.

If you plan to install applications on a memory card, we recommend purchasing a memory card with a higher write speed, Class 10 or higher. If you want to record HD or Full HD video then a Class 6 or 4 memory card is right for you. We do not recommend using a Class 2 memory card because it is relatively slow. Whenever you can, get a Class 4 or higher card.


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