Wait for the process to complete (about 1–2 minutes). The phone will restart automatically.
The phone will ask for confirmation. Press the Call/Green key again.
Continue holding until you see a screen with "Screen Display Test" or a white/green menu list. Release the keys.
Press the Call/Green key (or the Power key ) to select it.
You will see the welcome setup screen. Your Nokia 5310 is now reset. Method 2: Soft Reset via Settings Menu (For working phones) Use this method if you can still unlock the phone and navigate menus.