My GSM devices could go at least 2 days without charging. I don't mind charging every night, but right now it would be dead before my day is over if I don't charge it at my desk too. That can't be right?
From my experience, the thing that affects battery life the most is the signal quality of the phone/data service. If I'm in a location where the signal is 0 or 1 bar, then the battery will drain to 20-30 percent in about 4 hours. With a strong signal, the battery only goes down to 50% for the full day.
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