Replacement battery shows 100% but phone turns off if not plugged in.
This question is archived. No new answers are allowed, and only the question's owner may edit it.
I replaced my iPhone 4S battery but it won't turn on unless it is plugged in to the wall. Once it's plugged in the battery shows 100% but immediately turns off when I unplug it. The original battery, however, doesn't have that problem once I put it back in the phone.