I got my iPhone 4s new in November 2013, with IOS 6.1.3 installed. It was normally turned off two out of every three days. Other than not being able to feel the vibrator well, it ran fine up until last month. First indication that something was wrong was when my alarm did not go off in the morning, because the battery had completely drained overnight. I thought I might have been to blame, except that it has happened a few more times since then. The battery would drain abnormally fast with no apps running. This seemed to be an intermittent condition, but is getting more frequent now. Yesterday, the battery drained down completely after a few hours on idle use. I also noticed it was abnormally hot at that time.
I tried troubleshooting by turning on airplane mode, and off for location services. This helped quite a bit, but would disable many useful functions. The only other thing that is different, is that when first turned on, I cannot slide to unlock until screen disappears and I bring up unlock screen again. Don't know if that is related. Is this more likely a battery problem, or software problem? If so, any easy solutions?
I tried troubleshooting by turning on airplane mode, and off for location services. This helped quite a bit, but would disable many useful functions. The only other thing that is different, is that when first turned on, I cannot slide to unlock until screen disappears and I bring up unlock screen again. Don't know if that is related. Is this more likely a battery problem, or software problem? If so, any easy solutions?