That seems weird, even my M1 Mac running Sonoma will natively sync with my iPods that are all older than the original iPhone.Having a SIM card has nothing to do with getting it to connect! The main problem is iTunes does not recognize this piece of history!
well. I have a macbook pro from 2011 but it has Catalina.I don't *think* the SIM card should have anything to do with it showing up on the Mac.
Wait, just so I have this straight, you're using a first-gen iPhone? And you're connecting it, I assume, to an older Mac that still has iTunes installed? If so, this is truly a time capsule of a setup!