Hi
It may help to follow the instructions here, including under the heading "Get help if you can't send or receive messages" and including unpairing and re-pairing your Apple Watch if necessary:
Read and reply to messages with your Apple Watch - Apple Support
Keep in mind that the functions that are available on your Apple Watch when it is away from your iPhone depend on various factors including:
About Bluetooth, Wi-Fi, and cellular on your Apple Watch - Apple Support
Features and requirements that apply under various circumstances are detailed here, including within the footnotes:
How to use your Apple Watch without your iPhone nearby - Apple Support
If you still need help, then I suggest that you contact your carrier in the first instance.
If the issues persist, then, depending on your carrier's advice, I suggest that you next contact Apple Support (remote diagnostics and/or mail-in service may be available, if required), make a Genius Bar reservation or visit an Apple Authorised Service Provider for assistance:
Hi
It may help to follow the instructions here, including under the heading "Get help if you can't send or receive messages" and including unpairing and re-pairing your Apple Watch if necessary:
Read and reply to messages with your Apple Watch - Apple Support
Keep in mind that the functions that are available on your Apple Watch when it is away from your iPhone depend on various factors including:
About Bluetooth, Wi-Fi, and cellular on your Apple Watch - Apple Support
Features and requirements that apply under various circumstances are detailed here, including within the footnotes:
How to use your Apple Watch without your iPhone nearby - Apple Support
If you still need help, then I suggest that you contact your carrier in the first instance.
If the issues persist, then, depending on your carrier's advice, I suggest that you next contact Apple Support (remote diagnostics and/or mail-in service may be available, if required), make a Genius Bar reservation or visit an Apple Authorised Service Provider for assistance:
I imagine that we are in the minority; but I have the same problem with my cellular Apple Watch 3 on AT&T. I have spent the last three months trying to get it to receive calls over cellular and no luck. I have worked many hours with several Apple advisors and senior advisors and specialists and collected logs for engineers from the watch and still the problem persists. I can receive calls when my watch is near my phone; but, when it is only on cellular without the phone, the watch doesn't ring. I have even gotten a new watch and that doesn't work correctly either. One of the advisors suggested the problem may be with my phone because it doesn't work with the either the old or the new watch. I've also taken it to the Genius Bar and gotten no answer about how to fix it. I'm wondering if anyone else has this problem and how they might have resolved it.
Apple Watch cellular doesn’t work
