Since Apple released iOS 7 update several knock-off Lightning cables have been blocked. After plugging them in, iOS 7 will pop up a warning message saying that the item is not certified and may not work properly. This has been reported to happen on both iPhone 5, 5s, and iPad Mini.
I confirmed this myself on an iPad Mini. Apple has apparently started enforcing it’s licensing program for all third-party cables. Shutting down anyone who dares release a knock-off Lightning cable without paying Apple.
Earlier this week Cult of Mac posted a possible work around that may work. I have tired this without any luck.
1. Turn on USB power. 2. Plug in Lightning cable to iPhone. 3. Dismiss any warnings. 4. Unlock your iPhone. 5. Dismiss any remaining warnings. 6. Now with the screen turned on, unplug the Lightning cable. 7. Plug it back in. 8.Dismiss warning again. It should now charge.
Both Amazon and Monoprice just began offering Apple Certified Lightning cables at a cheaper price than Apple.