Genuine W11 iso, downloaded directly from MS website a few weeks ago, no modification. It was a Pro version if I remember correctly. I tested it on a 2015 Surface Pro. I was already connected to the network and did not click “Domain join” (I would have if it had asked for a MS account).
It works with 2G, sure, but I’m not sure how it would work on dumb phones: how messages would be decrypted or encrypted on a dumb phone, without that app?
Just this week I installed W11 on a laptop (temporarily, I just wanted to see how it ran on this hardware), and despite being connected to the it asked me, by default, for a username for the local account. I don’t know why, but it didn’t ask for a MS account first.
Just an update because I just figured what happened: I booted the iso through Ventoy, and just saw today that by default Ventoy injects register entries to bypass the online account requirement (as well as the hardware checks). Good to know.