Android introduces a cool new feature to ensure protection of private data to it's users by Pattern Lock technique. It is a unique thinking , other than remembering or setting difficult combination of password characters whether in numeric or alphabetic form. Pattern lock provides a huge set of patterns to choose from. User may set any unique and different pattern according to their wish anytime.With advantage of locking screen using this unique way , there is also a problem that sometimes many of android users have to face i.e. what if they forget the pattern they had used to lock their device or try to unlock it with wrong pattern number of times that turned device to get locked permanently ? If you stuck in such problem so dont worry there are three methods to unlock your device.