How to factory reset OPPO R831S? How to wipe all data in OPPO R831S? How to bypass screen lock in OPPO R831S? How to restore defaults in OPPO R831S?
The following tutorial shows all method of master reset OPPO R831S. Check out how to accomplish hard reset by hardware keys and Android 1.5 Cupcake settings. As a result your OPPO R831S will be as new and your Qualcomm Snapdragon MSM8926 core will run faster.
Oppo Yoyo R2001 Hard Reset work 100% ( TESTED )
Hard Reset will erase all of your data
All described operations you are doing at your own risk.