Series 4 (GPS+Cellular) data not working

[Benjamin Iveagh]

I have an AW Series 4 (GPS+Cellular) and Cellular has always worked great. After upgrading to WatchOS9, Cellular now shows no service. My watch still knows it has an active TMobile plan, but I get the red X for no service. I always got this when I went out of range of my iPhone, but after about 15 seconds and the cellular modem turns on, cellular service would establish successfully. Now, it just stays as no service. Anyone else see this?

 

[rocketman1973x]

I had this exact problem just the other day but on an S7.
In the end I rebooted the watch and all was back to normal.

 

[Benjamin Iveagh]

I had this exact problem just the other day but on an S7.
In the end I rebooted the watch and all was back to normal.

Thanks Rocket Man! That worked. I had rebooted a few times already but a 3rd reboot fixed it.

 

[ChrisBos]

I actually just bought my first cellular, a refurb S7. It seems like every time I leave my phone, I get the red x and it doesn’t kick over to cellular unless I manually toggle it off and back on.