"This cable or accessory is not certified and may not work reliably..." is the message i receive from my iphone 5 (ios 8.3) when i connect it's certified original Knock Off USB cable in order to recharge it.
I tried those 2 tricks you find around the web (unplug it, restart it, re-plug it etc) but i am only able to transfer files:
the iPhone does not charge anymore even though the display shows the "lightning" icon.
