@larry900, at this moment, Universal Print does not support iOS and Android devices. Being a cloud service Universal Print is architected with the goal of supporting as many OS platforms as we can, hence the use of standard IPP protocol.
Please chime in on the Feature Request (https://techcommunity.microsoft.com/t5/feature-requests/mobile-print-on-mobile-clients-ios-android/i...) entry on which OS platform is the most important to you.
Regards,
Jimmy
