http://www.washingtonpost.com/blogs/the-switch/wp/2017/09/20/apple-says-its-fixing-a-problem-the-new-apple-watch-has-with-its-internet-connection/

The main selling point of Apple's new version of its Watch is that the device can connect independently to cellular networks, making calls and running navigation on its own without being tethered to the iPhone. But on Wednesday Apple acknowledged that this centerpiece feature isn't working as intended.

Apple addressed the issue after two reviews of the Watch from the Wall Street Journal and the Verge cited problems with connectivity. The Watch is supposed to switch seamlessly between WiFi and cellular networks. In a statement, Apple said that the problems arise when the Watch tries to connect to certain WiFi networks. "We have discovered that when Apple Watch Series 3 joins unauthenticated WiFi networks without connectivity, it may at times prevent the watch from using cellular. We are investigating a fix for a future software release.”