I did a back up of my 4S on iTunes via my MBA before giving that phone away. Then, I did a reset "all contents and setting" on my 5S and did a restore from back up from the same iTunes account and MBA. That went fine. But now, I can't get iTunes to recognize the 5S. I've tried to: 1. "Reset all network settings", Reboot iPhone. 2. Quit iTunes and reboot my MBA What else could be going on? For a moment an iPhone icon did appear when I clicked on SYNC it did nothing and disappeared. Now, I can't get that iPhone icon to reappear. EDIT: The 5S was in a Mophie battery case and I was using the mophie cable to sync into iTunes via USB since this is the cable I use to charge both the 5S and battery case. To troubleshoot the issue, I removed the Mophie case and used my OEM Apple cord and charger and iTunes finally is able to recognize my 5S. But why wouldn't the Mophie cable work?