iTunes could not connect to this iPhone. Could not send a message to the device
iTunes could not connect to this iPhone. Could not send a message to the device. I kept getting this message from iTunes. Restarted new purchased iPhone 7, restarted iMac OS X 10.7.5 , changed cables, try different USB ports. Current version iTunes 12.2.2 installed. Trust computer checked. Home sharing on both devices ok. Phone device not appearing on HD or iTune. Photos transfer ok to iMac ok, just not able to connect iPhone to the iTunes on my iMac. Please help!