My iPhone calendar icon missing. How do  I retrieve my iPhone calendar? The icon disappeared off my screen. I thought this was a permanent icon? Help!
If you somehow did uninstall the Calendar app from your phone like my father did, an easy way to get it back is to have someone text you a date, like "December 1st". This will automatically be converted to a link, which you can tap, which will then open a prompt with a message asking if you'd like to re-install Calendar.