I do not think it is the battery for two reasons:
1The phenomenom occurred just 4 5 months after I bought the phone new
2 When the battery level is recovered from 6% to its' original level you just can use the phone for many where it just uses power in a normal gradual way
I'm tempted to master reset my 4s and see how the battery indicator works after that. I am convinced that there is a glitch in one of the updates. If the battery issue goes away after the reset, that should answer the question.
Hi,
You can try it. Personally, I never advise anyone to perform factory restore (Hard Reset) unless I have a good reason to advise it. When you hard reset a device, all of
its contents are clean, this way you end a device without data and in most of the cases with the same problem. Sometimes it fixes the problem, but since you don’t know what the problem was, it may happen again…