- Please switch off the phone.
- Next press and hold together Left button + Volume Up, then press and release only Power button.
- Now select from the Recovery Mode menu option "Wipe data/factory reset". To select use Volume buttons, and to confirm that with Power button.
- Then enter option "yes - delete all data" using Volume Down to scroll, and confirm with Power button.
- After that, press Power button to accept option "reboot system now".
Hard Reset will erase all of your data
All described operations you are doing at your own risk.