Sahil
Said..
Normally same processor to format Nokia mobiles. Using some steps you can easily format your device.
To format your Nokia 6600 use these instructions.
First see that your mobile is full charged. Copy all important data to your memory card like your Contacts, Important dates etc. Now you can remove the Memory Card but keep the sim card and restart your phone.
Then press the keys *#7370#.
The phone would ask a confirmation. Select yes. Then it will ask for a code. The code is 12345 (the default).
There you are! Your phone will restart with all the phone memory formatted. Asks you to choose a country, time and date enter time and date. I hope you will found a refresh new set.
To format your N73
Make sure you phone is fully charged. Backup your contacts list and personal files to MMC memory card (if possible). And switch off your N73 phone.
Press and hold these three keys together:
Green dial key,
Star key (*)
Three key (3)
Press the power on/off to switch on the N73 phone. Do not let go the three keys until you see the “formatting” screen displayed. Wait a few minutes until the format is complete. Your N73 will now be at its original factory settings.