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I too have had some "issues" with my web connection and radio stations from my cell phone. Not even sure how to correct the issue, if indeed I have an issue!!
I got upgrade from MCU1 to MCU2. Maybe because of that my internet broken. A Tesla mobile technician came to me today and said that Tesla was knew about this issue and planing to fix it in a next update.
New issue - my wifi connection keep re-initializing. Adding successfully new wifi connection or hot-spot from my iPhone, see them in wifi screen (connected). Go outside of car, locked car. Come back in a few, wifi screen is blank, no single connection.