How to factory reset OPPO R15x? How to wipe all data in OPPO R15x? How to bypass screen lock in OPPO R15x? How to restore defaults in OPPO R15x?
The following tutorial shows all method of master reset OPPO R15x. Check out how to accomplish hard reset by hardware keys and Android 8.1 Oreo settings. As a result your OPPO R15x will be as new and your Qualcomm Snapdragon 660 MSM8976 Plus core will run faster.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.