How to factory reset DOOV V31? How to wipe all data in DOOV V31? How to bypass screen lock in DOOV V31? How to restore defaults in DOOV V31?
The following tutorial shows all method of master reset DOOV V31. Check out how to accomplish hard reset by hardware keys and Android 7.0 Nougat settings. As a result your DOOV V31 will be as new and your Spreadtrum SC9850 core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.