Hard Reset Android Phone and Tablet
Power off your android phone.
Press and hold the volume down for 10 – 20 seconds after that press the power button for a short while.
Choose option recovery by using to navigate volume button and power key to confirm.
When you see an android logo press and hold volume up, and release the power button.
Choose wipe data/factory reset.
Then select yes delete all user data.
To restart the phone. select “reboot system now”.
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