A lot of iPhone, iPad, and iPod Touch users have had an issue with their devices charging where they get the error message ‘This accessory may not be supported’ I had this issue with my iPhone 4 for a long time and sometimes with my 6S too. However, it is fixable.
First of all, you should check your device’s charging port for any debris or gunk. Shine a torch through and use a toothpick to scrape out any gunk. I had this issue once with my 6S. The charger wouldn’t go in fully and the device wouldn’t charge. I later found out that gunk and debris were blocking the charger from fully getting into the port. After clearing it out my 6S would charge again.
Secondly, you should try installing any software updates on your device, that is, if you have enough charge to do so without having to worry about a corrupted system. This advice is passed around often about issues with Apple devices and if you’ve had issues before you may have seen it many times, but sometimes a software update can fix major issues with your device.
Thirdly, try a different charger. Ask your friend if you can quickly borrow theirs to see if your device charges with it. If it does, maybe it’s time to buy a new charger. This is what happened with my iPhone 4, it stopped charging and gave me the error but when I showed my friend, he offered to test it with his charger and it worked. I knew at this point that I needed a new charger so I bought one and haven’t had any problems since.
A temporary fix if you’re in a hurry to charge your device is to plug in your phone, see the error, turn on airplane mode, then restart your device. My iPhone 6S was stubbornly refusing to charge yesterday and when I tried this, it worked! It can be helpful also if you want to check for a software update that could fix the issue permanently but can’t because your device is low on charge.
I hope one of these solutions helped you fix this error on your device. If not, you may want to look at getting your device repaired professionally as its charging port may be broken. But many device problems can be fixed easily, and I hope that this one was easily fixed for you.