Hard Reset KARBONN A4
- Turn off the device.
- Next remove and reinsert the battery.
- Hold and press Volume Up + Power button.
- When you are in recovery menu, the select "Wipe data / Factory Reset" option.
- Now press Power button to confirm this option.
- Choose in the next step option "Yes--Delete all user data", and confirm it with Power button.
- After completion of the process, your device will reboots.