A used iPhone with no cellular plan (no SIM, no data plan, no voice plan) can be a great WiFi-only “iPod Touch.” I know it’s a rare case, but can a recent-ish no-plan iPhone also be used to allow you to have an Apple Watch? (Not a cellular Watch of course.) I seem to keep running into people who want an Apple Watch yet are committed to either a no-data flip-phone or a cheapie Android phone. And who are almost always on WiFi anyway—which means a spare hand-me-down iPhone (non-activated) might in theory allow them to use an Apple Watch. They’d get fitness tracking, weather, timers/alarms, etc., but no calls/texting. They’d also get the value of iOS app notifications, iMessages, FT audio, and music/media control. When they leave home, it’s up to them whether to take the extra iPhone along or not—either way, fitness tracking continues. Some of them already have a hand-me-down iPhone which they use and like on WiFi. So I started to wonder: Limitations aside... would this work? Can you activate a non-cellular Apple Watch by pairing with an iPhone that has no carrier plan? Thanks in advance!