You can pay hundreds for a Switch, and hotspot from your phone.
You can also do it for free if you have an xbox. You dont even need a controller. Just stream your console on your phone and use touchscreen
Already have 4 switches and a switch2, every other gaming console, 2 steam decks, rog ally, lost count of how many gaming laptops. I've tried PS+, game pass, VR streaming, wifi monitor, long hdmi cable into bedroom (wife vetoed quickly), many other ideas.
Nothing works except regular laptop/PC still. I want to spam baal runs and similar games at a competitive speed. Consoles dont let you host games well. Handheld PCs used to be great but now they are locked to console UI and cannot be used for D2 except single player
On a phone you can put PC UI since theres a keyboard. Let me connect a controller. Phones are fast enough now to run D2 for sure, people can run cyberpunk and similar games