How To Hard Reset Nokia 500 -

For extremely stubborn units that ignore the above commands, you can try the bootloader reset:

Continue holding the three buttons until you see the Nokia "shaking hands" logo or the country selection screen. How to Hard Reset NOKIA 500

Once the phone reboots, you will see the initial setup wizard. Your Nokia 500 is now as clean as the day you bought it. For extremely stubborn units that ignore the above