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. 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.
Resetting Your M900 Moment Device
Resetting the device restores all the factory defaults, including the ringer types and display settings. All data, including downloaded applications are deleted.
Important: Back up your important data before you perform a factory reset of the device.
1. Press > and tap > SD card & phone storage > Factory data reset. (You will see a disclaimer.) 2. Read the disclaimer and tap Reset phone. 3. If required, draw your unlock pattern to confirm the reset process.
or select Menu -> Settings -> Privacy -> Factory Reset.
Samsung moment hard reset with key combo
With the Samsung m900 phone turned off hold VOLUME DOWN + CALL + END CALL buttons > Master reset, Wipe Data Factory reset