How to Reformat an SD Card for an Android

1. Turn on your phone and unlock the screen. Press the 'HOME' button.

2. Press the 'MENU' button and then tap 'Settings.'

3. Scroll down and tap 'SD card and phone storage.' Tap 'Unmount SD card.'

4. Tap 'Format SD card' and then 'OK.' Wait for the formatting process to finish.

5. Tap 'Mount SD Card.' Press the 'HOME' button.