Full phone formatting on nokia os7!

If you encounter situation like below on your phone,

1. Blank screen phone unable to reboot.
2. Phone only able to boot-up to Nokia word screen.
3. Install some program but not able to uninstall it after that.
4. Error messages such as Child Installer keeps popping-up.

Do a Full phone formatting on your phone! as steps below,

• Make sure you have at least 3/4 charge of battery power left.
• Backup your contacts list and personal files to MMC memory card.
• Switch-off your phone.
• Press and hold 3 keys;
  Green dial key, * (star key) & no. 3 key and then press the power on/off to swtich on the phone.
  Remember, do not let go all of the keys and hold keys until you see a formatting word screen show!
• After a few minutes when the Full phone formatting completed, your phone will back to original system and factory settting.

All apps installed & not of the phone default will be lost. If you did a backup on your mmc, you can restore it back to the C drive again.