So I recently ordered Ariana grande tickets and I’m wondering if I could just use my phone for them to scan the barcode of the ticket?? Could they scan it or do we need to print out the ticket??

Your can use your phone. Customer service can scan your ticket off of your phone after you go through the security process. If you bought the ticket through Ticketmaster it would be best to download the Ticketmaster app this way they can scan the barcode off your phone.

Yes u can

Yeah you could scan the tickets from your phone

Yes they scan the QR code on phones