So the Watch 3 uses the eSIM which uses the same phone number as the iPhone .What happens when you change numbers or use a different SIM from overseas? EDIT; Oh wow. I just saw the thread https://forums.macrumors.com/thread...ls-only-works-in-country-of-purchase.2067891/ Well that sucks. I travel all the time swapping my Asian and north American SIM cards. A Lot of good an eSIM stuck on north American LTE does.