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Nokia 3310 reset Restore factory settings

Select Menu > quick menu 6.4 to Restore Nokia 3310 factory settings The preset code is 12345

Restore factory settings (Menu 6-5)
You can reset the menu settings to their original values. For this you need the
security code. The preset code is 12345.
This function has no effect e.g. on the following functions:
• the names and phone numbers stored in the Phone book
• text and picture messages
• phone numbers listed in the Call register menu
• call divert

You can also use a special cable (Fbus F-Bus cable) to reflash your Nokia 3310 software. Latest N3310 firmware version is 6.39

Nokia 3310 Hard reset Soft reset

My phone, my life...

General advice: Before you buy a new cell phone or new tablet, please try the following procedure to repair your device in a software way. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before doing 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.! Please also note, that a hard reset operation will not unlock your mobile phone's SIM lock or network lock, but it will remove the unlock pattern, remove the user password or PIN password (NOT the SIM card's 4 digit PIN code). Also note that the firmware version will not be affected in any way, it will not be downgraded, it will remain the same you are using and if you have rooted your device, root privileges remain also unaffected.