First method:
- at the first step switching off the OPPO F3 by holding down the Power key for a short while.
- In the next step press and hold together Volume Down and Power key for a few seconds.
- As soon as the Oppo logo pops up on the screen release all keys.
- Then select English by using Volume keys to browse and Power rocker to select.
- From the reset menu select Wipe data and cache twice.
- Afterwards confirm the whole process by selecting Yes.
- You have to tap Reboot in order to restart device’s system.
- The restoring operation will be done as soon as the OPPO Welcome Panel shows up.
- Success! You just accomplish the factory reset opearion.
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