I don't sync my iDevices often but wanted to sync photos I saved on my Mac to my iPhone, iPad, and iPad mini. All worked fine on the mini which was running 11.4. However, once I updated it to iOS 12 the mini was no longer recognized by iTunes. I checked with my other 2 devices which were running iOS 12 and had the same problem. When I do a system report and scroll down the hardware list to usb, it does show the device connected and I have no trouble charging through the port. Does anyone else have this problem? Is it a known problem? I checked Apple sites and they say upgrade Mac and iTunes to the latest. iTunes 12.8 is the latest but I don't feel like upgrading to Mohave just yet. Maybe I have to?