I have an iPhone 7S and would like to mirror what I am doing on the phone apps onto my MacBook Pro running OS X. I followed the same instructions that everyone is giving by hooking up the phone with the charging cord to the computer. I went to QuickTime and clicked on File, then Choose New Recording. Doing this takes me to a window with two options: to click and get more info (which took me to a page that could not be found), or to buy something.. When I clicked on the second option it took me to the same page, which was not found.
I want to keep this simple by only using the cord and not WiFi since it is not always available where I teach. How can I resolve this issue with QuickTime?