IPhone 4s Battery Decreasing rapidly?
I've had a iPhone 4s for quite some time now (ever since March) and the battery lately has been dropping so much! I have everything turned off, dimmed screen, Bluetooth off, push emails etc. I don't even have any apps running in the background! I'm running on IOS 5.1.1 jailbroken.
In just an hour it went from 100% to 20%! I don't even use it that much!
There are two possible high probability reasons for this.
1) you didn't mention that the phone's transceiver was turned off. When the transceiver is turned off, the phone won't ring when an incoming call arrives -- the phone will appear "off" or unlocatable by the local system of cell towers. When the transceiver is on, it maintains a heartbeat with the local system of towers to ensure that if a call or txt arrives, your phone is updated immediately. This heartbeat costs power. The further from the system of towers you are, the more power it consumes.
so "everything turned off" is different from "the phone is off." it can still be using a lot of power even though it is just sitting idly.
2) you battery needs to be replaced.
batteries don't last forever, and when they get old, they can't hold a charge for very long. Replace your battery.
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