Help and Support for
Apple Watch Ultra 3
watchOS 26
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I can't use mobile data on my Apple Watch Ultra 3 watchOS 26
Cause 1 of 5: Your Apple Watch isn't correctly set up for mobile data.
Several functions on your Apple Watch use mobile data, e.g. when making or receiving calls, sending email messages and listening to the radio.
Solution: Set up mobile data on your Apple Watch.