We will show you step by step how to change the lock screen time out on the Samsung Galaxy S II.
When you device is left idle for a period of time the screen will automatically locks itself. If you set the lock out time too short then it can be annoying as while you read a message the screen get lockouts. Conversely if you set the time too long it can consume too much power unnecessarily. You can modify this time according to your personal preference. Here's how: