T-Mobile Sparq II hard reset( Back up all data on the internal memory. )
1. Remove the back cover and remove the battery.
2. Remove the SIM card.
3. Wait 5 seconds then reinstall the battery and SIM card, and then replace the back cover.
4. Press and hold the Pound (#) key and the red End key at the same time until a menu screen appears.
5. Select the green Check mark icon. The phone will reset.
Note! All of your data will be deleted! Backup all important data before you hard reset your phone!
T-Mobile Sparq II factory reset from menuFrom the Home screen, select Menu.
Scroll to and select Settings.
Scroll to and select Security Settings.
Scroll to and select Master Reset.
Select Master Clear.