iwajabitw
Member
If you are in an area without a signal and need to charge your phone. Put it in "airplane mode", if not it will drain the battery on a car if you have it plugged up to charge. Saw over a dozen dead car batteries this weekend. The iPhone without a signal will constantly search for one. This, while charging on a car charger will kill the battery, I was a victim of this, this weekend along with many others. Turn it off or put it in airplane mode and it will charge to capacity without killing a car battery. Also, if you don't have a signal and will not for a while, put it in airplane mode to preserve the battery you have left. It will drop over 20% in a hour searching for a signal.
