In order to hard reset a Nokia 7280, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Nokia 7280 device will be brought back to the default configuration of a brand new device.

 

1. First, press and hold the Power button to turn on the phone.

2. Press the Call button and tap in the "secret" code *#7370#, confirm.

3. Now tap in the lock code. Default lock code is 12345. Your phone will now reset. Voila!