Disable Light Sensor
Gear: Samsung Galaxy Player 4.0
The ambient light sensor manipulates the screen's brightness. I think setting brightness to a level you can like all the time is a better option. Tweak it to your liking.
Adjust Screen Time-Out
The screen time-out dims the screen after a period of time, which is 30 seconds. Some people want to extend this time-out time, and I am one of them. I think 1 minute is long enough for my needs.
Change Lock Screen
The default lock screen is terrible, so I recommend changing it to the pattern based lock screen.