Developers testing Apple’s iOS 7 beta have received warning prompts when using an unauthorized Lightning cable to sync or charge. The prompt the operating system presets reads as follows:
This cable or accessory is not certified and may not work reliably. With this iPhone.
Now iOS 7 is only in beta and the warning could be changed, removed or the circumstances that brought it up could be altered by the time iOS 7 is launched. Testers can also simply dismiss the prompt and carry on as usual. The Lightning cables seem to work as expected.
Last year it was found that Apple’s new Lightning connectors featured embedded authentication chips. These required more time and effort before third party accessories were ready for market.