Phones were designed to be phones, not car keys.
Same continued issues with the Tesla. Same now with the Rivian. I'm sure it's the same for all other's trying to do the same. Never been a fan of it. I'm not one that lives with my phone attached to my hip. I leave it in the car. The Tesla key fob was nice. Small, weighed nothing and had passive entry / exit. Throw it in your pocket and never notice its there. Always worked, no issues. The Rivian key fob is much larger, heavier and is not passive, which blows me away. Hoping someday they get it updated to be a passive fob.
Trying to use the phone key, almost always requires me taking the phone out of my back pocket, or get to the car / truck and do a little dance.
Sad that it is an issue we even have to discuss. Getting in and out of your vehicle should be something you never have to give a second thought to. Passive key fobs have been around for over 15 years. Easy to do. But, everyone wants to re-invent the wheel when the current wheel works just fine.