Originally Posted by
TyTy
The reason why your charge isnt lasting is because it is searching for signal on the trail probably. You said signal is spotty, that is the worst/most battery draining thing a phone can do is hunt for cell signal. They devote a lot of resources to hunting for signal when it is spotty, mainly because people's first priority is usually to have signal on their phone. So your phone is hunting, searching, switching from one signal channel to another, one tower to another, analyzing, searching some more. That crap will drain a battery likety split. Turn it on airplane mode, I bet the battery lasts multiple days. Turn airplane mode off when you need to send a text or make a call or whatever.
Any phone is giong to lose charge hunting for signal weather it is Android, iphone, or a cheap flip phone.