Question: iPhone 6 will not connect to iMac
My iPhone 6 will not connect to my iMac via USB. I am running up to date IOS on both iMac and iPhone. It will not charge or appear as a device.
The phone charges when I plug into the wall.
It connect's to my girlfriends Macbook Air.
The iMac is for sure a trusted device.
I have tried two different cables.
I have tried each and every USB slot.
I have reset the SMC on my iMac and NVRAM - did not work.
I have cleaned out the iPhone charging port to the best I can.
When I first started having the problem, the iPhone connected for a few minutes and then disconnected without me doing anything and after that it will not connect again.
Anyone have any ideas? I would really appreciate it! Many thanks!
iPhone 6, iOS 11.2.5, iMac macOS High Sierra Late 2013