With options for 64GB, 128GB, and 256GB, the Samsung Galaxy S9 has you covered no matter your storage needs. However, should you buy the phone and realize you need more space after the fact, the S9's microSD card slot makes it easy to upgrade your storage at any time. There are a ton of microSD cards out there to choose from, but without a doubt, these are the very best ones you can get.

Add just a little space

Silicon Power 32GB High Speed microSD Card

The Silicon Power 32GB microSD card allows you to add a bit more storage to your Galaxy S9 for just a few bucks ($8.99, to be exact). This card meets UHS-1 Class 10 standards to ensure fast performance, read speeds reach up to 85MB/s, and the included adapter allows you to also use this in a standard SD card slot.

$7.99 at Amazon

64GB of fast, capable storage for under $20

SanDisk Ultra 64GB microSDXC Card

For a few more dollars, you can step up to the SanDisk Ultra 64GB card. Along with the added space, read speeds are also a bit faster at 100MB/s. SanDisk also includes a regular SD adapter, and just to be safe, you've got ratings for waterproofing, shockproofing, and temperature-proofing. For just under $18, you can't go wrong with this one.

$16.99 at Amazon

Middleground of storage and price

Samsung 128GB EVO Select

Want to seriously increase your S9's storage without breaking the bank? For about $35, you can get Samsung's 128GB EVO Select microSD card and add a ton of extra room for photos, videos, and more. Read and write speeds are rated at 100MB/s and 90MB/s, respectively, and the card's rated to perform in temperatures ranging from -13°F to 185°F.


Great for lots of photos and video

Samsung 256GB EVO Plus Class 10

If you've got a bit more cash to burn through, you can step your game up to the $79 Samsung EVO Plus Class 10 microSD card with a whopping 256GB of space. On top of all that storage, you also get an SD adapter, waterproofing, temperature protection, and ultra-fast read/write speeds.

$74.72 at Amazon

Most storage you can get

SanDisk Ultra 400GB microSDXC Card

Last but certainly not least, you can go all the way for $160 to pick up SanDisk's 400GB microSD card. If you've already got a 128GB S9, this brings you up to a monstrous 528GB of available space! There's a 100MB/s max read speed, 10MB/s minimum write speed, waterproofing, protection against intense temperatures, and more.eader.

$152.67 at Amazon

If you're shopping for a microSD card for your Galaxy S9, these are the ones we recommend looking at first. Some people may just need a little extra wiggle room with the 32GB card, and while most people probably won't fill up the S9's internal space and another 400GB on top of that, it's nice to know that all of these options exist. For most folks, the SanDisk Ultra 64GB microSDXC Card will be the best pick thanks to its great balance of speed, increased storage space, and price.

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