You can’t be connected to wifi and your phone has to be away from you or in airplane mode. I was confused as well. It took the watch about a minute to figure everything out and go from the red X to the green status dots. This is definitely not how I thought all this would work. I assumed you’d be able to turn off Bluetooth/WiFi on your phone and the watch would connect to LTE. Also, I figured you’d be able to turn off Bluetooth/WiFi on the actual watch as well to save battery life. I guess that’s not how any of this works.