Wondering if we will have to constantly keep on our bluetooth function on our phones for use for opening out Model 3s. Im assuming so, but was wondering if there is a way it can connect only when we approach the car, without having to leave bluetooth on all the time. I personally don't like leaving on my bluetooth on phone as it drains battery and leaves a connection open to your phone (https://lifehacker.com/stop-leaving-your-smartphones-bluetooth-on-1817176967). I guess we'll find out soon.