Hello. I am a new Droid owner and I must say it's very impressive as my first smart phone. I just wanted to ask this: why is the battery life so short on this phone? Are all smart phones like this? Just today at college, I had 40% battery left and the only thing I did was check the time from time to time. Then I checked my email and the low battery warning instantly pops up. What's the deal with that? Forgive me for my ignorance but are there tips and advices to extend battery life? Is it true that Advanced Application Killer helps? Friendly answers would be appreciated. Thank you and have a good day.