====> Switch off the mobile, Wait about 10sec to 45sec.
====> This is important point for hard reset Nokia. Keep in same time volume
(+) and power buttons in same time. Just keep the volume
(+), press the power button. Keep it all same time around 10 sec.
====> Now you will see the no-commend android logo and press the VOL
(-) button
====> Now you are able to face a new interface that is android recovery option. It’s your point; in this interface you are able to see a list of menu items.
====> From the menu items you should select wife data/ factory reset and press power button for confirm it.
====> On the next steps the android recovery option want form you conformation you want to factory reset your android device? If you select
“Yes” then all data will delete form your mobile.
====> Wait some time work is running after done the factory reset the phone again show android recovery option; now you should select reboot the mobile via volume
(+) or
(-). After sleeting press power button and your android device is reboot now.