You’ll probably come across a slew of number-symbol combinations printed on cards and their packaging. All prices are correct at the time of writing, but the microSD card market moves fast, so expect them to change. While you can look beyond this list, we advise sticking to the brands mentioned above. We've narrowed this list down to a number of the best microSD cards for all options, across a range of well-known brands like Samsung, Lexar, SanDisk, Toshiba, and Kingston. But no matter which device you're buying it for, you'll want to get your hands on a microSD card from a reputable brand. You're not even safe if you have an iPhone or iPad, as they've never had microSD card slots.īut all is not lost! Some of the best Android phones and best Android tablets do still support them, and they're still required for use with cameras, security cameras, and drones. Even the most expensive phones around, like the Samsung Galaxy Z Fold 4 and the Samsung S22 Ultra don't have a microSD card slot anymore. Unfortunately, this feature is falling out of favor in the smartphone space, and most flagship and midrange phones no longer have a slot to insert a microSD card. They provide extra storage space for your smartphone, but they're also key in tablets, drones, and security cameras. Application Performance rating: The A1 or A2 ratings guarantee minimum levels of performance for running apps, but few phones or tablets can run apps from microSD cards anymore, or even have microSD card slots, so A ratings aren't that relevant.MicroSD cards are an unsung hero in the mobile space.This is especially important for cards used to run operating systems or programs (in a Raspberry Pi or one of the few Android phones that still let you run apps from microSD). Random speed: A microSD card used for operating systems, applications, or games needs to be fast at reading and writing small bits of data in random locations.Sequential writes are important for shooting video and high-resolution photos, and copying media to the card. They’re important for watching movies, loading game levels, or copying data from the card to your computer. Sequential speed: Sequential reads show how fast big chunks of data can be read from the card.It also helps to get a reliable card from a reputable manufacturer like Samsung, SanDisk, or Kingston to minimize the chances of something going wrong. Although we didn’t eliminate cards for having a shorter warranty, we noted ones that offered 10-year limited and lifetime limited warranties. Warranty: The longer the warranty, the better.All our picks are UHS-I we didn't test any UHS-II cards because few devices need them, and UHS-II cards are very expensive. You won’t get the full speed of UHS-II unless both device and card have support, because it requires an additional row of physical pins to achieve its extra speed. You should get a UHS-I bus card, unless the device you’re using specifies that it supports UHS-II. UHS-I bus mode: Bus mode is a standard that dictates how different generations of SD cards work.V60 and V90 microSD cards, which are fast enough to record 8K video, are expensive and require relatively rare UHS-II bus devices, so we didn’t test any. Cards rated U3 or V30 have a minimum sequential write speed of 30 MB/s, enough for 4K video. Class 10 or U1-rated cards can write sequential data at least 10 MB/s-the bare minimum for shooting 1080p video. Unless your device specifically requires a lower speed class (such as Class 2, 4, or 6), you should look for a card rated U1 or U3. Speed rating: The SD Association has three overlapping speed rating systems.Check your device to make sure it supports SDXC (eXtended Capacity) cards before buying one.
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