Can I add cellular to my Apple 7 watch?
I thought my Apple watch was cellular capable when I bough it, but it isn't. Can I add the cellular capability to it now?
Apple Watch Series 7, watchOS 9
If you own a GPS only model, no, you cannot make it cellular. It lacks a cellular radio.
To be sure, open the watch app on your iPhone. Tap My Watch, lower left. Tap General. Tap About. Post back what the model number is.