https://www.cnet.com/news/5g-is-still-a-little-magic-a-little-smoke-and-mirrors/

I'm at Mobile World Congress 2019 in Barcelona, and I'm watching what's been billed as the world's first live surgery that involves a doctor assisting from a remote location. Dr. Antonio de Lacy, head of the gastrointestinal surgery service at the Hospital Clinic of Barcelona, is here at MWC, giving advice to his medical team across the city. In real time, without any lag, the team sees what he's drawing on a video of the patient's colon, which tells them exactly what to do.

This isn't a TV show. It's real. And it's possible only because of the new 5G networking technology that's rolling out across the world. There's a live 5G network from Vodafone at the Barcelona hospital talking to a similar setup in Hall 4 of the Fira Gran Via, where MWC takes place.