I haven't ripped a cable apart and I don't intend to do so, but I am wondering... The Charger/Sync cables I got with my iPhone work fine. A pair of older cables I use with an iPod sync properly with the iPhone but I get the error message telling me I cannot charge the phone with these cables. I am wondering what the difference is between the cables that work for charging and the ones that do not. Also, I've been looking for a decent-quality 6' sync/charger cable for my iPhone...suggestions? Thanks...appreciate responses.