I am getting VERY frustrated with this phone. I bought the car dock ($20+) so I can use the GPS and I cannot find a charger (AC OR DC) that can keep up with the drain. Even with the bluetooth off the battery just drains the entire time. I have spent as much on freaking chargers as I did on the phone. I have tried 850 mah, 1 amp, 1.5 amp, and a 2.1 amp chargers. NONE have been able to keep up with continuous use of the phone, let alone GPS. I can't even just talk with the phone plugged in without draining the battery. I cannot believe that this thing pulls more than 2.1 amps. For the record it doesn't matter if I am using the extended battery and the stock battery. Is ANYONE having any luck charging this thing during use?