If your Android phone is running out of storage space, many phones will allow you to insert an SD card, which you can set as the phone's primary storage.

What can you do with a microSD card on Android? Can you store apps and games? What's the difference between internal and external storage? We answer all.

However, SD Express cards are backward compatible, meaning they will function in your Android phone, albeit at reduced speeds. That is assuming, of course, you even have an SD card slot.

The Samsung Galaxy S25 range will not include an SD card port, but you have other options for expanding your phone's storage.