A:Answer You do not have to activate the cellular on your watch. I recently bought the Series 4 stainless steel Apple Watch. I bought this particular watch primarily for the stronger watch face, not really for the cellular. I have worn my watch for about a month and not activated it with a carrier. As long as you don't activate it with a carrier, you don't have to pay anything extra. Activating it with a carrier means you can wear it while not having your cell phone and still take calls, answer texts, listen to music, etc. Not activating it means your cell phone must be close to you to do these things. Different carriers charge different amounts (I believe). I think my carrier would charge me $10/month to activate the cellular.
