Forum Discussion
connectivity problems outside the USA with apple watch ultra when its standing alone
ultra won't connect to cell towers in other countries
Just because they can see the device roaming doesn't guarantee it being fully compatible with the roaming partners network. It might be able to connect to the network while roaming but if that partner network doesn't support those devices to be able to use calling without being tethered. That might explain the issue. US Cellular domestic roaming is a good example of that. What country are you visiting?
