Just updated to iOS 7 and discovered that your device is saying that “This cable or accessory is not certified and may not work reliably with this iPhone”? Try this fix.
This problem is caused by iOS 7 trying to fend off people from using non-certified or non-original a.k.a. fake lightning cable which has a cracked authenticator chip. Apple updated the codes in iOS 7 and will prevent “fake” lightning cable from charging your iPhone. Although this seems to work in iOS 6.1.x and below, Apple, as usual would do anything they can do block any non-approved third part device to be used on “their systems”.
While this irritates many people, Apple is actually doing them a big favor by providing a guarantee of their safety. There have been many cases of iPhones blew up due to the use of non-authorized lightning cables.
Thankfully, there’s a temporary fix for “This cable or accessory is not certified and may not work reliably with this iPhone” error while you find the time and money to get a genuine or approved ligthning cable from Apple. Here’s how:
- Turn on USB power
- Plug in lightning cable to iPhone
- Dismiss warning again
- It should now charge
It’s a bit of hassle doing the steps above all the time, so I would suggest that you get yourself a genuine lightning cable from your nearest Apple store; or just wait until some hackers or Chinese manufacturers can come up with a new workaround to bypass this blockage.