In order to hard reset a Nokia Asha 500, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Nokia Asha 500 device will be brought back to the default configuration of a brand new device.
1. Press & hold the Power button until the device turns on.
2. Open Dialer by pressing Call button. Type in 3 and * buttons. Hold them down simultaneously.
3. Release them when Nokia logo pops on-screen.
4. Press Call button to confirm the operation. Done.