Why does 'Charging is not supported by the accessory' keep appearing when I try and charge my 3GS?
For the past few months, my 3GS hasn't been charging properly. I'll plug it in to charge, sometimes the alert 'Charging is not supported with this accessory' will appear straight away or part way through charging. When the message appears, I can sometimes unplug it, and plug it back in and it will charge again, but as time goes on this gets less effective. I've used 3 different cables, all of which are Apple products, and I've been using them with the plug I recieved with the phone and I have also tried with another Apple plug. When I changed the cable it would work perfectly to start with, but each time the problem would start again. Why is this, and what can I do about it?
iPhone 3GS (8GB), iOS 6.1.2