Deleting data from Nokia Lumia 800 can be done in several ways. The functionality of the device allows you to completely reset the parameters through the "Settings" menu. If the phone freezes and does not turn on, you can make a hard reset by holding down a certain key combination.
Data backup
Formatting the device settings allows you to completely delete all settings and files, and also makes it possible to correct errors in the device in case of problems with the installed software. Before performing the operation, you should save the necessary information on your computer by synchronizing Outlook with your Microsoft Exchange account.
Also, if you want to keep the contacts on your phone, move them to the SIM card or also use the synchronization setting in the "Contacts" sections of the "Settings" item. After formatting the device, your contact list will be downloaded from the Windows Phone server and you can use the contact list again.
Reset from the Settings menu
A soft reset option to factory settings allows the user to delete all data stored on the device. You should resort to this method to clean the settings of the device in case of violation of its general functionality, freezes and frequent automatic reboots.
To use the function, go to Settings - System (About Product) - System Information - Restore Default Settings (Factory Reset). Confirm the operation by entering the desired machine lock code. If you have not manually changed the code, enter the combination of 000000 or use the instructions for use with the phone to clarify the standard password for making changes. Click "OK" and wait until the update of the system parameters is completed. After a reboot, all settings will be restored to their default values, and the data stored on the machine will be erased permanently.
Hard reset switched off phone
If your phone is turned off or cannot start after installing an operating system update, you can perform a factory reset using a special combination of function keys.
Press simultaneously 3 controls: volume down, camera and lock buttons. After a short vibration occurs, you need to release the power button, but the camera and volume down keys should be kept pressed for about 5 seconds. After that, you can release the rest of the keys and wait for the notification on the reset to appear on the screen. After the reset is complete, you will see a message on the screen stating that the operation was successful.
