Yesterday, I was at a supercharger and left my phone in the car when I stepped out to unplug after charging completed....big mistake! The door auto-locked and I was locked out of my Model 3, door would not open/unlock even with phone inside! Stupidly I had my wallet inside the car too which had the key card.
After panicking for a couple of minutes, I was saved by my Apple Watch and Siri! Used Siri to search for Tesla phone # and was able to call from my watch and request Tesla roadside assistance to remotely unlock my car after they verified some basic info about me.
Seriously not sure why the car would auto-lock if the phone was inside the car. I know bluetooth was working as used my Apple Watch to make calls from my phone which was inside.
PSA: don't leave your phone in the car and get locked out
Hopefully a key fob will come out soon as never had this problem with other cars in the past.