How to factory reset OPPO R15? How to wipe all data in OPPO R15? How to bypass screen lock in OPPO R15? How to restore defaults in OPPO R15?
The following tutorial shows all method of master reset OPPO R15. Check out how to accomplish hard reset by hardware keys and Android 8.1 Oreo settings. As a result your OPPO R15 will be as new and your MediaTek Helio P60 core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.