I have learned that when my Tesla finds an Xfinity Wi-Fi hot spot, it connects, but not really. The hardware connects (though sometimes only 1 bar signal level), but Xfinity has a cumbersome log-in process involving a browser, and it doesn't work well, even with full featured browsers on computers and phones. Whenever the car grabs an Xfinity Wi-Fi signal, my app won't connect. I finally deleted Xfinity from the list of Wi-Fi signals in the cars Wi-Fi settings list and I can now reliably connect to the car. Took me a long time to figure that out. I realize it was not the problem happening during the period of this thread, but it's something to be aware of if you find intermittent connectivity problems between your phone app and your car.