I have to babysit my little price while everyone else is gone. To keep me entertain, I always connect Samsung Galaxy S4 to TV through MHL 2.0 HDTV Adapter. Watch TV series, music video, movie and anime then. However, it consume some battery life while leave the screen on even with lowest brightness. Luckily, there is a free Android application that can help. Yes, Screen Standby is the one. It can turn off Galaxy S4 screen without putting it to sleep. Therefore, applications like YouTube, PPS TV can continue to play without screen on. Work on games too. It helps to save battery life and avoid it from overheating too. Isn’t that great? Okay, here is the catch. It requires root access.