Help and Support for
Samsung Galaxy Watch4
Android Wear OS
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I can't use mobile data on my Samsung Galaxy Watch4 Android Wear OS
Cause 1 of 4: Your smartwatch isn't correctly set up for mobile data.
Several functions on your smartwatch use mobile data, e.g. when making or receiving calls, sending email messages and listening to music on streaming services.
Solution: Set up mobile data on your smartwatch.