How to factory reset OPPO R1S? How to wipe all data in OPPO R1S? How to bypass screen lock in OPPO R1S? How to restore defaults in OPPO R1S?
The following tutorial shows all method of master reset OPPO R1S. Check out how to accomplish hard reset by hardware keys and Android 4.2 Jelly Bean settings. As a result your OPPO R1S will be as new and your Qualcomm Snapdragon 400 MSM8928 core will run faster.
Oppo R1 Hard Factory Reset - video