Conversation so far:
when did the apple watch 3 series come out
The Apple Watch Series 3 was released on September 22, 2017
how much is the apple watch series 3
As of December 2019, this Apple Watch Series 3 can be purchased with the basic feature of GPS for $199.
how much is the apple watch series 3 with the cellular feature
To receive access to the cellular feature with the Apple Watch Series 3, buyers have to pay $299

Question: which carriers support the watch
Self-contained rewrite: which cellular carriers support the apple watch series 3