On: Apple Watch 3

[JigglyGigalo]

So it has a software SIM? If so it's the first time I've heard of a device with one.

[et-al → JigglyGigalo]

Yup. They call it an eSIM: https://techcrunch.com/2017/09/12/the-cellular-enabled-apple...

"The eSIM has to be provisioned via the device itself, which is handy if you want to switch between T-Mobile and AT&T in a hurry, but not handy if you want to switch to a carrier not supported by Apple, or sell your device to someone on a different carrier."

[mark212 → JigglyGigalo]

During the demo they described a small chip built in that worked as a SIM so I don't think it's purely software / eSIM.