For The last 7 years of working and traveling 50% of the time my setup has been two iPhones and a Macbook Air. I have about 30 sim cards now. In Europe I mostly use tmobile. Hotel lobbies usually have free wifi, as do cafes, hostels and bars.

The main difference is I kind of hate talking to people about work so I avoid video chat and try to keep all work communications on Slack/Signal.

America was actually the worst place to work and travel. Data there is too expensive and coverage sucks everywhere.