Hello
- Turn off your mobicel onyx.
- Press and hold the Volume key + the Power key.
- Release both buttons as soon as the turns on.
- Press the Volume up at once to enter the Recover mode.
- If it takes you to a no command screen' then just tab the Power button at once.
- In the Recover mode use the Volume keys to navigate and the Power key to confirm your selection.
- Using the Volume down key' Scroll to 'Wipe data/ factory restore'.
- Tab the Power key to confirm.
- Scroll to 'Yes---delete all user data'.
- Again, confirm with the Power button.
- Wait until you see Wiping complete.
- Short press the Power button to 'Reboot now'.
Done!!!.