Hull Trains offers both options. They say that e-tickets are stored in the phone app. Just to clarify, if I choose e-ticket there is no PDF and if for some reason my phone isn't working then I'm stuffed?
I know that P@H is a PDF than can either be printed off or stored on a phone/tablet.
I know that P@H is a PDF than can either be printed off or stored on a phone/tablet.