So my iPhone is a second hand iPhone 4 and lately it's been very choosy about when to charge or not when plugged in. It sounds crazy but I swear sometimes it waits till it gets to about 2% and then gives in and will charge. Anyway it also breaks phone chargers as discovered when borrowing my friends which now does the same to her iPod with only that charger, so not her iPod issue. So my question is, do I have to admit defeat and that it's broken and get a new one, or is it fixable?