To keep your microSD card in good condition, reformat it on a regular basis. Reformatting erases all of your content, so be sure to offload your photos and videos first.
1. Press and hold the Mode button for 3 seconds to turn on Brave 4.
2. Press the Down button to enter Camera Settings.
3. Press the Mode button and then press the Down button to find the ‘Format’ option.
4. Press the OK button, and the screen shows 'Formatting...' 'Completed'. Then you format
your memory card successfully.