Changing the "Sprint Greeting"? Is there a way to change the "Sprint Greeting" on my lock screen? I want to put my name in there instead of the normal "Sprint". I read that you can't, then read you can if you root the phone? I also right now have horrible battery life. I get about 5-6 hours on a full charge and all I do is mostly text and a few calls during the day...that is it. Iam a noob so don't know how to root the phone if I need to do that?