Don’t see cellular on Apple Watch

iPhone Cellular Carriers that support the Apple Watch, which models, the radio frequencies each model uses, and the country where they offer service:

https://www.apple.com/watch/cellular

These are the list of iPhone carriers that can activate your Apple Watch Cellular radio.

You can easily verify that you have a Cellular Apple Watch if the Digital Crown has a Red Dot or a Red Ring on it.

Did you buy the cellular model?