What the heck are they using for a battery in this thing? I bought this phone on Friday morning and its now Tuesday afternoon. I've charged the phone twice, I keep WiFi and GPS on, screen timeout is set at 2 minutes, brightness is set at 50%, and I still have 42% left on the battery. And I've been using it heavily. Is this phone equipped with a new type of battery? I've owned android devices since the HTC G1 and I don't understand how this battery life is possible.