SD cards have a lower density for write operations than other forms of storage which means after a certain amount of usage, all SD cards will eventually be unwriteable, and some time soon after that, unreadable. Whenever you get the Android unable to format SD card error, it often happens because the SD card is already formatted with a file system it doesn’t recognize, or the SD card can no longer perform write operations. Why does the “Android unable to format SD card” error happen? On the bright side, it is still workable in most cases, and as long as you haven’t put vital information on an SD card of all things, you should be fine. Unfortunately, it usually means that the hardware on your SD card is beginning to fail, and you may end up having data loss. Is your Android unable to format an SD card? This is a common error, not just on Android but on other platforms as well.
