Guys my dad has a GS3 n unfortunately he has forgotten his pattern unlock n he's in India n wants to unlock the phone. He doesn't know anything about Hard Booting. Is it possible to unblock it. Pls guys help me
It should be no problem if Android Device Manager was left enabled in the Security settings.
But first off, usually with a pattern lock on Samsungs, if he keeps trying enough times he will be given a screen to either enter a backup pin number OR a username and password (I think that's how it's worded). Basically it's asking to enter his Google email address and password.
If that doesn't work, log in to his Google email / account on a pc, go to Device Manager which will find the phone on a map if it's on, and select "Lock" which lets you lock! the phone and enter a new pin number, so overriding the old pattern lock.
Good luck.