5G streaming solution, for CloudXR use

Hi, I was wondering if anyone was using CloudXR over 5G, with the source using a 5G modem / transmitter, rather than just the receiver. This is for Mobile phone use, but I need the source (server) to be mobile over 5G as well, not just the receiver / viewer / client.

I wonder if the cheapest solution is just to look for the smallest 5G cellphone and use that. But maybe I’m overthinking this and there’s some nvme card that can accept a sim card or esim and talk to a normal 5G cell tower.