Karbonn A99 Pattern Lock Remove Easy Method Via Keys

Warning! Factory reset will permanently delete all your data and customized settings,
and will remove any applications you’ve downloaded and installed. Be sure to back up
any data and files you want to keep before you do a factory reset.
Unlock Pattern Lock On Karbonn A99 smartphone
Power off mobile.Press and hold Volume Down + Power keys tighter until recovery menu appear.
Move down with Volume Down key and highlight Clear eMMC and press Power to confirm.
Wait until process complete for 2 to 3 minutes.
After format complete restart device.