A mobile ticket is an electronic ticket that is transferred to an individual via the email associated with their account. Mobile tickets are transferred through the venues primary ticketing platform, which is most often through Ticketmaster’s platform.
However, it is not uncommon to receive a mobile QR code screenshot. The screenshot is the same ticket as if your ticket was transferred to you directly via email, but for some events/artist/teams there are restrictions on the transfer of mobile tickets. Just remember, mobile QR codes cannot be printed for entry into an event, as they must be displayed on a smartphone.