Written by Some iPhone 4S users complained that the speed of battery consumption is too fast. A user who once contacted apple said, “My battery is pretty bad, stand one hour drop of 10%. i think there might be some programs running in the background, leading to power down too fast. I closed all the new features, including Siri and Geolocation Service, the problem is still not resolved. I also tried pure version of the settings, not use any program, the problem remains.”
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