I bought the ticket on obb website, and got it on pdf file.
Can I just show it on my cell phone without printing?
If it is not an electronic ticket but a PDF I would print it.
you can..I don't print mine..but if #1 is a local I would go with their adviceEdited: 10 May 2018, 23:15
Take a print-out. Cell phones go dead, get broken, get stolen, get lost, etc. You have it and a back-up if needed. Travel with printouts of your documents which you will typically never need. Smart.
You need a printout. OBB website specifically instructs to take a printout. My ticket was checked and stamped by a ticket checker. You also need a photo Id.
The instructions on the ticket specifically mentioned printout on A4 paper.