- Switch your phone off and on, if possible.
- Disconnect and reconnect the charger.
- Be sure to use the Nokia battery charger that was included with your phone. Older chargers may not fully charge the battery, or may take longer than normal.
- Try the charger with another compatible phone to check if the problem is with the charger or the phone.
If the battery is completely empty, charge the phone for at least 20 minutes to make sure your phone has enough power to start up, then try to switch on the phone again.