A coworker just bought a Rezound and has been getting really great battery life. Over 24hours with 40% remaining (with light usage, he is new to Android). This blows my mind because I've forgotten to unplug my phone overnight and saw it run down 5% an hour with the screen off. I checked to see if they snuck a software update but he is running the same 1.02.605.6 as I. But my PRL is 15088 and his is 15098. How do you update PRL? Also, what is your PRL?