hi everyone, my friend’s bday is coming up and I was planning on buying him a micro sd for his Xiami Redmi 9, since lately he’s been complaining about how his storage is never enough. Would a SanDisk micro sd work just fine on his phone?
Yeah pretty much any SD card should work fine. They'll likely need to format it when they insert into their phone and may need to individually transfer applications and files to it but after that it should be smooth sailing.
Some older phones had upper limits of supported SD card sizes but that's not really the case anymore.
If it's a question of if the phone has an SD card slot I usually check GSMArena for phone specs.