In our description database there are 3 solutions for performing hard reset for Nokia 5140.
Choose the first method and follow the steps to perform a hard reset. If the first solution does not work, try the next method.
Please remember! Hard reset will delete any and all data your device contains; like pictures, contacts, messages, apps etc. Everything. Nokia 5140 device will be brought back to the same configuration as that of a brand new device.
Instruction I:
1. Press and hold the red Call button until the phone turns off.
2. Is it off? Cool. Now press and hold Call + * + Power + 3 buttons simultaneously.
3. Release them when Nokia logo appears on-screen. Congrats! Your phone should now reset and restart, completing the hard reset process.
1. Power up the phone.
2. Open the dialer, enter this code into it - *#7370# - and confirm.
3. Enter the lock code into the phone (12345 by default). Device will reset and restart.
1. Press-hold the Power button until the phone turns on.
2. Now enter Menu. From there, go to Settings > Phone > Phone management > Factory Settings > Delete data and restore.
3. Last of all, confirm the hard reset process by selecting Yes. Voila, done.