https://www.cnbc.com/2017/09/20/apple-watch-series-3-loses-connection-fix-coming-apple-says.html >In a review of the new Apple Watch Series 3 with GPS and cellular connectivity, The Verge noticed that the watch often didn't connect to networks properly. >This resulted in an occasional inability to place or receive phone calls and text messages, or access Siri. Since that's a primary selling point of the cellular-connected Apple Watch Series 3, it's a pretty big deal.