Please excuse me if this topic has already been discussed, my searches didn't turn up the answers I was looking for - to set expectations for next year's Tesla purchase... I live in central Alabama, and often travel to places with little or no cellular data coverage - sometimes no cell phone coverage at all. Some of the threads I have read suggest that several things won't work on the MS, such as navigation, voice commands, music, etc. Also, in my home town is the University of Alabama - when there is a home football game, the AT&T network becomes so swamped that it is unusable. I have switched to T-Mobile for personal cell so that I can call & message during games, when there are 120,000 fans in town. Could someone with experience fill me in on what to expect? Do I need to carry along one of those stick-it-on-the-windshield Garmin GPS devices as a spare when the in-vehicle navi system doesn't have connectivity? Can I connect my iPhone to the car so that I can play music and podcasts? Or a I anticipating a problem that really doesn't exist?