Hard Reset Karbonn A15 To Remove Pattern Lock Easy Method

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 A15 smartphone
Power off mobile or remove battery and insert again.Press and hold Volume Up and Power buttons together.
Release the keys when color screen appear.
Touch left Option key once to show recovery menu.
With volume down key select Wipe data/factory reset and press Power key to confirm.
Select Yes---delete all user data and press power to confirm.