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These are the best microSD cards you can buy

A microSD card for your Android phone lets you easily move your files, photos, and music from device to device without having to rely on steady Wi-Fi or costly data. It also lets you load your phone up with apps, music, and movies, which is especially useful if your device doesn’t come with a lot of internal storage. But which ones are the best? Here’s a good selection from which to choose.

Best blend

Samsung EVO Select

Staff pick


This has long been our preferred card for three reasons: it’s reliable, it’s fast, and it goes on sale frequently. It’s available in 32GB to 512GB capacities, with write speeds for the 128GB and up boasting 100MB/s read and 90MB/s write speeds.

From $33 at Amazon
From $38 at Newegg

Ultra affordable

SanDisk Ultra


SanDisk has more powerful cards out there, but for most folks, the Ultra is the right answer. It has up to 100MB/s read speeds for accessing downloaded movies and music, and you can purchase it in sizes from 8GB up to 512GB.

From $6 at Amazon
From $8 at Newegg
From $5 at B&H Photo

Go pro



This card boasts both read and write speeds over 90MB/s, is available in capacities from 32GB to 512GB, and is an excellent choice for power-users who intend to use the card for storing app data and recording 4K video.

From $15 at Amazon
$90 at Best Buy
$95 at B&H Photo

For constant use

Samsung PRO Endurance


Samsung built this model for constant recording and re-recording in dash cams and security cameras. Still, it’s excellent for memory-strapped phones that are constantly writing to the microSD card. Available from 32GB to 128GB.

From $10 at Amazon
From $10 at Best Buy
From $10 at Newegg

Best for 4K video

Lexar Professional 1000x


This is a fast card that’s perfect for shooting lots of 4K video and storing lots of game data, thanks to that V60 speed classification. You can get it in sizes from 32GB to 256GB.

From $28 at Amazon

High capacity options

SanDisk Extreme


The A2 classification means the SanDisk Extreme is optimized for apps, and it’s available from 32GB up to the ludicrously massive 1TB if you need to hold your entire digital life on it. You can get it with or without an adapter.

From $10 at Amazon
From $25 at Walmart
From $15 at B&H Photo

Made for apps

Kingston Canvas React


There are a few series in the Canvas line, but the Canvas React is A-rated for handling apps, making it the winner for the Kingston cards. You can grab one from 32GB to 512GB.

From $12 at Amazon

Heavy duty

SanDisk High Endurance


If you like to take your phone to the desert, the ski slopes, the beach, or you drop it a lot; this card is made to withstand the harshest conditions. Sizes range from 32GB to 256GB.

From $10 at Amazon
From $17 at Walmart
From $10 at Newegg

Super resistant

Verbatim Premium microSD Card With Adapter


Available in capacities from 16GB up to 256GB and with V10 video class speed and up to 80MB/s read/write speed, this card can stand up to the elements as it’s water-resistant as well as shock- and temperature-proof.

From $10 at Amazon

What do all these classes mean for your card?

There are a lot of different specs used to classify microSD card speeds, and most cards have at least two of these classifications in addition to the straight read/write speeds listed for the card. Here’s your cheat sheet to these formats and which ones are better than others:

  • Video Speed Class — Indicated by a stylized V followed by numbers from 6 to 90, this class is one of the newer classification systems and was developed specifically for shooting ultra-high-definition video. V30 starts at 30MB/s write speed, V60 starts at 60MB/s write speed, and V90 starts at 90MB/s, but unless your phone shoots 8K video, you probably don’t need a V90 card.
  • UHS Speed Class — Indicated by a 1, 2, or 3 inside a U, this class is still used on most cards today. U1 starts at 10MB/s write speed, U3 starts at 30MB/s write speed, and both are perfectly adequate for most Android phones.
  • Speed Class — Indicated by a number inside of a C, this was the original classification system for SD cards. Class 10 was as high as this class went, 10 MB/s write speed, and practically every card worth buying today is well beyond this speed at this point, so it’s not as helpful an indicator of power/quality these days.

You may notice that all of these specs are focused on write speed — that tends to be the lower of the two rates on an SD card — so if you see a card with a “transfer” speed of 100MB/s but only a U3 class, chances are that card has a read speed of 100MB/s and a write speed of 30MB/s.

For most users that just want to use a microSD for storing app data, music and movies for offline playback, you’ll be perfectly fine with a U1 or U3 card like the Samsung EVO Select. If you’re someone who intends to use a microSD card for shooting copious amounts of photos or 4K video, you might want to spring for a U3/V30 (30MB/s) or V60 card, such as the Lexar Professional 1000x.

Check your phone before you buy


Like just about everything else in a phone, manufacturers have to license specific software for certain microSD card formats to work in their devices, and that’s why some phones like the Galaxy Note 10+ say they take up to a 1TB card while other phones might only say they take up to a 128GB card.

In most cases, you can stick a 256GB card in a phone only rated for 128GB and be fine, but I generally try to stick to the rated sizes so that if something goes wrong, support can’t blame you for using too big of a card. And unless your phone specifically says it can take a 1TB card, don’t waste your money on one, as capacities that high do need a phone rated to handle them.


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