

Some of these points may solve your issue. In order to diagnose my own issue I made a list of things you could try, which you can find below. If, however, you issue isn't solved by reinstalling iTunes, there are a myriad of things you could try.

My iPhone wasn't showing up in iTunes or Xcode, but reinstalling iTunes allowed it to show up again. You do not need to disable System Integrity Protection to do this.Īs a matter of fact, this is what solved my issue on a Mac with High Sierra. Note that this will work on newer macOS versions such as El Capitan, Sierra, and High Sierra. If your iPhone isn't showing up on iTunes on macOS, you may reinstall iTunes by downloading the installer from here. Continue reading this answer for an updated method.

The other answers to this question as of writing this answer are now somewhat outdated – you can't manually uninstall iTunes without disabling SIP on El Capitan and newer macOS versions, and I would not recommend disabling SIP to delete iTunes.
