Say, thanks again for all the follow-ups!
I like Alameda's distinction of AW with GPS, AW with Cellular, and AW with Cell Plan! Apple should steal that and pay A. royalties!
Uh-oh. Just when I thought I was getting a complete handle on all this, Night Spring made this pithy comment.
I'm wanting to use Fall Detection with automatic Emergency SOS calling WITHOUT a cellular plan at all. My carrier, Tracfone, doesn't support the Watch. That's why Apple's statement alarmed me!
“Some cellular networks may not accept an emergency call from your Apple Watch Series 5, Apple Watch SE, Apple Watch Series 6, or Apple Watch Series 7 (GPS + Cellular) if your Apple Watch isn’t activated,if it isn’t compatible with or configured to operate on a particular cellular network,orif isn’t set up for cellular service.” https://support.apple.com/guide/watch/make-an-emergency-phone-call-apd4ea933124/watchos
An Apple Watch appears to be incompatible with Tracfone. But, again, this is likely due to my misunderstanding of what "compatible" means and what "set up for cellular service" means!
Oh, as to WiFi and BT, my iPhone is almost always off and when any of my i-devices are on, they are in Airplane Mode, with WiFi and BT off, to save battery life.
Break is right -- getting and trying a Watch is now the course I'm on...
OTOH, Break, how does one test the emergency features of the watch? I do NOT want to call 911. In many places, you are fined for making false 911 calls.
I'll try contacting Tracfone at some point, but knowing what customer service is like with cell phone companies, I'm not sure I can trust the answer!
I have much greater confidence in the collective wisdom of MacRumors commenters!
OP you're making this harder for yourself than it needs to be.
Battery drain on iPhones is minimal if you aren't using them... so why toggle airplane mode? It'll break the connection with the watch (if you get one). IMO a cellular watch is only necessary and useful if you regularly find yourself needing to be away from your phone. A non-cellular watch paired with your phone on a prepaid service should be more than enough for your uses.
Here's a support article on cancelling an SOS Emergency call from the watch: https://support.apple.com/en-us/HT206983