Hard Reset 3Q S

First method:

1. Start by turning off the phone, by using the Power button.
2. Press and hold together Volume Up and Power button for a few seconds.
3. You can release held keys when you see an Android icon.
4. Then use Volume buttons to select "wipe data/factory reset" and tap the Power button to confirm.
5. Afterwards choose "yes" from the menu, and accept it with Power button.
6. When a Recovery Mode appears again on the screen accept option "reboot system now" using Power rocker
   
7. That's all. The hard reset operation should be completed.

Second method:

1. If the device is off, hold down the Power button to turn it back on.
2. Afterawrds from Main Menu find and select Settings.
3. Then open the Backup and Reset folder and select Factory Data Reset.
4. Tap Reset Phone and read the warning when it pops up.
5. Choose Erase Everything and the phone will begin restoring.
6. Well done!