Before you buy a new cell phone or new tablet, please try the following procedure to repair your device. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.!
Nokia 6600 hard reset
There are 2 ways to do a factory reset on your Nokia 6600 phone.
The first methode is a soft-format code for Series 60 phones is *#7370# . Enter this code in the dial phone screen.
It performs a format of the Internal drive - All data will be lost!You must use a valid SIM card to enter the phone dial screen. Make a back up before doing a full reset of your 6600 phone.
Nokia 6600 hard reset using keys / buttons. Little bit difficult, but it works!
Master reset Nokia 6600
The method of performing a hard-format, i.e resetting it completely to factory defaults and removing all data, is as follows:
1. Switch off the phone. 2. Hold down the following three buttons: Green (call answer) button, * button, and '3' button 3. While holding these buttons, press the power button and switch on the phone 4. When the message 'Formatting' appears on the screen, release all of the buttons. It will take about 2-4 minutes! Phone will reboot! Do not power off your device until phone reboot. Insert SIM card message or if you have inserted SIM and PIN code enabled until that message.
Note: There is no need to insert any SIM card to do this Nokia 6600 hard reset format using buttons.