SONNY
Premium Account
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*Turn off your mobile phone
*Press the volume - and on / off at once
*wait for approximately 5 seconds until the display on your mobile phone Oppo
*Select english language
*Select wipe data and cache
*Select Yes
*Done for 2 times the data wipe process
*Reboot
*Turn off your mobile phone
*Press the volume - and on / off at once
*wait for approximately 5 seconds until the display on your mobile phone Oppo
*Select english language
*Select wipe data and cache
*Select Yes
*Done for 2 times the data wipe process
*Reboot