FWIW, I've been driving Model 3 daily for the past 10 days and have had zero (i.e., nada, 0, bagels, ziltch) problems with my phone talking properly with the car. 100% success. (iPhone 6S, btw) In fact, I laughed at myself yesterday because I went out to my LEAF to drive to the gym (that is now LEAF's sole job, so as to maintain the new car smell of Model 3 for as long as possible) and hadn't thought to grab the key fob, which very suddenly feels super old-school to me. I keep the Model 3 key card with me now as a habit (3 pieces of plastic in my pocket now, rather than just two), thereby eliminating any phone/bluetooth stress. But again at a 100% hit rate thus far over 10 days/500 miles, I've already adjusted to lack of fob and find the notion of a fob to be quaint. I suspect the vast majority of Model 3 users will have the same experience as I am having. Unfortunately, few will bother to post about positive experiences.