Many Android devices still ship with microSD card slots, although they are becoming less and less common on newer devices. If your phone or tablet does have a microSD card slot, you can gain more storage by changing SD card.The storage you gain can’t usually be used for apps and other system files, but you can store music, videos, pictures, and other media files there. Please keep in mind that not all the apps can be moved to the external storage. Some apps require to be stored on the phone internal storage and they can’t be moved from there.