Hard Reset Samsung Grand I8552 To Remove Pattern Lock

How To Reset Samsung Grand I8552 To Remove Security Locks
At first step, Power off your Samsung Grand I8552.Press and hold Volume Up + Power key together.
Release when logo appears.
Using Volume keys Select "Wipe data/factory reset" and confirm with power key.
Now select "reboot system now" and confirm.
Wait for a while to complete the process.
That's All. You have done.