[Toysrme]

Ok so the battery life on the delivered phone is an absolute joke. Loosing 10-20% state of charge every 20min is not uncommon! There are two primary resons for this and it is NEITHER what you are doing, NOR what you are running's fault.
1) The device ships in GSM mode and there aint that many damn GSM towers in the US. This thing will connect to your local US cdma network and then search unendingly for a GSM nework on its other RF unit. Set the device to CDMA only mode and you will cut your average current draw to a quarter of what it regularly is. (youll also notice the phone doesn't heat up as much near the RF circuitry)
Settings->Menu->Phone Network Mode
Mode of operation = CDMA only
Changing nothing else, running no extra programs other than startup, having wifi enabled (no bluetooth). You should go from draining 10-20% soc/20min to 10-20% soc/6+ hours.
2) As I suspected some of the lipo stock they are sending out is old / was stored improperly charged. Go/call Verizon and get your free replacement battery (keep both). I fly ALOT of R/C and have been using big boy lipo's for afew years now. The stock battery is 1s 1500mah 1.5C lipo cell. (sorry, I was tired and wrong math in a previous post. The batt is 1.5c not 3.666C)
Now, a lipo should never be run below 20% soc, and longevity (charging/discharging cycles) is kept much higher by keeping discharges to a minimum (try to charge before 30% SOC, always). (please remember that the phone's meter may or may not be calibrated correctly, take the phone as only a guesstimate of what the battery is actually doing)
Testing the capacity of the cell revealed that pulling the battery down to 20% SOC (3.8v) and charging back up to 4.1v (vs an r/c lipo's 4.2v/cell) revealed only 917ma were replaced in the battery. This battery is a complete DUD and should have taken on average 1100-1150ma for a "blah" cell, to 1200-1250ma for a great cell.
In closing... Set the damn phone in CDMA only mode & get a free replacement battery, hoping its good stock! You can play with cabs that turn off push internet, ect to incrase battery life. But it's absolutely pointless until you get a good batt & have it stop searching for non-existant towers!