I saw the story linked below indicating Tesla is working on a way to have the app connect to the car more quickly. This would be awesome - not only is it so slow that I'm most of the way out to my car by the time it connects, If I try to connect then leave the app to do something else on my phone it seems to cancel the connection. I've taken to opening the app, hitting the climate button and just leaving my phone turned on while I do other things. It works but it's a rather clumsy setup.
Tesla app may load vehicle data instantly in an upcoming update
Tesla app may load vehicle data instantly in an upcoming update