Apple Watch
If I buy a used Apple Watch that has cellular and I have a different carrier can I switch it to my carrier?
Apple Watch
Apple’s Worldwide Developers Conference to kick off June 10 at 10 a.m. PDT with Keynote address
The Keynote will be available to stream on apple.com, the Apple Developer app, the Apple TV app, and the Apple YouTube channel. On-demand playback will be available after the conclusion of the stream.
The Keynote will be available to stream on apple.com, the Apple Developer app, the Apple TV app, and the Apple YouTube channel. On-demand playback will be available after the conclusion of the stream.
If I buy a used Apple Watch that has cellular and I have a different carrier can I switch it to my carrier?
Apple Watch
Julieda's information is correct. However, make sure that the watch is made for your location. The Apple Watch cellular is a regional device, and not all carriers in all countries support the Watch. Apple Watch - Carriers - Apple
Apple Watch Series 3 & 4 (GPS + Cellular) is not locked to any specific carrier and has a built-in eSIM that copies information from the iPhone's SIM card.
Apple Watch