iPhone backup to Mac
I am trying to backup my iPhone SE to my Mac OS High Sierra. The instructions say to locate the phone in iTunes on the Mac. When I open iTunes and connect my iPhone by USB cable the only things that show on the left are music. I got a pop up that said I needed to download and install something for my iPhone to be found in iTunes. I tried that but it says it’s downloading 1 item but after 15 minutes there is nothing showing in the progress bar. What should I do?
iMac