Tutorial by The Mac Observer. A document tutorial from Apple Support can be found here.
As of iOS 11, screen recording is offered as a built in feature in Apple's mobile devices; working on both iPhone, iPad, or iPod Touch.
Another option to record the screen from Apple's mobile devices is to connect the device to a Mac and use Quicktime.
Important: Please note that data recording on mobile devices may not be compliant with GDPR.
Works on: