Remote viewing an iPhone screen
I have volunteered to help retired seniors learn/deal with their new Apple devices: iPhones, iPads, and Mac computers
I use an iMac: Oct 2015, 27” 5K display, External OWC SSD, OS 11.4 and an iPhone Xs Max running iOS 14.6.
In Zoom sessions, sharing the screens of seniors, I have been able to have some of them attach their iPhones to their Macs, launch QuickTime, mouse over to the tiny arrow in the right side of the ensuing window, mouse down and select their iPhone, click on it, and be able to view their iPhone on my Mac and guide them through what needs to be done on their iPhones or iPads.
I recently could not do this with a lady with a Mac Mini and a new iPhone. The iPhone is running iOS 14.X and the Mini is running Catalina.
When we could not get this to work, I opened a new Finder window on her Mini, and the iPhone did not appear in the sidebar, which is weird.
Restarts of both devices did not fix the problem.
Another lady with whom I had the same problem went to the Apple store and reported " I went to the Apple Store and they put my iPhone back on my Mac" but I know she will never be able to explain what they did to fix the problem.
Can anyone suggest fixes to try when this happens?
iPhone XS Max, iOS 14