How to reset:
Warning! All data will be lost!
1.Turn off your phone
2.Press together volume up and power key
3.Release your finger from the power key when Nokia logo appears on screen and keep pressing volume up
4.Select with volume keys "wipe data/factory reset" and press power key to confirm
5.Select "yes" and press power to confirm
6.Press power key to confirm "reboot"
7.Wait until the phone restarts