I ordered two of those flat ribbon cables as posted by geoffj on the previous page as i need to keep spares at a mates house and at work. They’re pretty guff quality to be honest, one of the cables has a loose lightning connecter in the plastic plug so i’m not even trying it, the other cable flashes up a warning on my iPhone 5s and retina iPad mini which states the following “This cable or accessory is not certified and may not work reliably with this iPhone“, it also seems to take an absolute age to transfer any music to the phone, I tried the original apple cable and i tried the cheapy black cable and the black cable is noticeably slower at music/data transfers with the same playlist – whether or not this is a compatibility issue or a deliberate apple certification ploy i dunno?.
And one final thing, the black cheapy cable is not compatible when using the Apple 5s leather case, so i’ve just ordered two of the more expensive certified Belkin cables.
Buy cheap….buy twice.