i phone 3 turns itself off when battery dips below 60%. Will work when plugged in to mains. restored to factory settings at apple shop yesterday, and today it did the same when battery life hit 60%.
i phone 3gs just turns itself off when battery % dips below 60 or so, any ideas, could this be battery? Have recently had a reset by apple and still no change. Also beeps occasionally. Any idres please?
iPhone 3GS, iOS 6.0.1