In our description database there are 2 solutions for performing hard reset for Oppo R1S.
Choose the first method and follow the steps to perform a hard reset. If the first solution does not work, try the next method.
Please remember! Hard reset will delete any and all data your device contains; like pictures, contacts, messages, apps etc. Everything. Oppo R1S device will be brought back to the same configuration as that of a brand new device.
1. Press the Power button until the phone turns off.
2. Now press and hold the Power & Volume Up buttons simultaneously. Let go of them when Recovery Mode starts.
3. Lets continue! A menu will open. From it, select wipe data/factory reset. To do so, use Volume buttons to navigate the menu and Power to select it.
4. Next, select Yes and Reboot System Now.
5. Voila! The phone should now reset and restart, completing theh hard reset process.