Before you try the factory reset or hard reset on your device,First make sure that you have backup your important files.
Restoring the default settings or factory reset your device will delete all your existing files and will go back to its initial state.
Factory Reset:
1.On your Home screen, select Menu.
2.Go to Settings, and select Privacy.
3.Tap on Factory data reset.
4.Then tap Reset phone.
5.Tap Erase everything to confirm the reset.
Hard Reset:
1.Turn off your phone.
2.Press and hold the Power button and the Volume Keys Up and Down.
3.When your phone will show the boot mode menu, press the Volume Down to highlight Recovery.
4.Then press Volume Up to start Recovery.
5.Your phone will reboot, then shows the Android robot/logo.
6.When the robot appears on your screen, press the Volume Up and Volume Down together.
7.The recovery menu should appear on the screen.
8.Press the Volume keys to scroll to the factory reset option.
9. Press the Power button to activate.
10.Use the Volume keys to scroll to the Yes to confirmation, then press the Power button to confirm.
11.When the reset is complete, press the Power button to choose reboot from the recovery menu.
