Hello. I think the Lte watch works with all Swiss providers, but for the activation of the esim setup, one of the providers officially supported by Google must be used. I took a prepaid sim from Deutsche Telekom and was then able to set up my Wingo esim via QR code.

I tried Sunrise, but without success. Apparently Google does not officially allow any Swiss providers, which also fits in with the fact that neither the watch nor the smartphone can be bought in the official Google Store in Switzerland. There seems to be some kind of blockade, which obviously affects the functionality.

It can be assumed that this will work. However, as the watch is not yet sold, we cannot confirm this 100%.