How do I unlock the screen when forgotten password? I have a Samsung Galaxy Tab 2. My daughter put a screen lock on and doesn't remember the code. How do I unlock it?
If you log on to android device manager, you can send a lock request, allowing you to change the password. Just be sure to change it after!

As a alternative, keep getting it wrong until "forgot password?" and login in via google. It will then let you reset the password