On our 2019 Model 3, LTE connectivity failed after update to 2021.40.30.11
WiFi works when the car is at home and it can connect to the home WiFi. On the road, I was unable to connect to hotspot on my phone.
Repeated reboots - both the 2-button press kind and the 'Power Off' from the Controls->Safety screen.
Managed to call Roadside and talk to someone who immediately said that the LTE antenna which is in the mirror is not functioning and needs to be replaced. Made a service appointment.
I cannot imagine how a software update broke a mechanical part
