On Android phones you can activate a feature called pattern lock. This feature can be compared to a Windows computer asking for password after the screen saver kicked in, only instead of a password you use a pattern. You get a screen with 9 dots and you draw a pattern of your choice with 4 of them. If you forget your pattern (or have kids that likes to play with phones) you will after 3 faulty attempts be unable to use the pattern to unlock it. Instead you are asked for your Google account and password (that is setup with the phone of course). This is where the problem starts.
This Tool Help You To Remove Pattern Lock From Samsung Android Based Phone.
Samsung Lock Reset Tool
One Click Pattern Crack
One Click Password Reset
One Click Pin Reset
All Without User Data Loss
Android 4.x.x (Tested Some Models)
Test and Report