apparently you can, but it depends on whether your car manufacturer provides an app to do it.
https://www.directcarbuying.com/blog/can-a-smartphone-be-used-as-a-car-key
HUGE Rummage sale to benefit the Bloomfield High School Robotics Team Sale Date: Apr 27, 2024
More info
Huge Brand New construction Apartment in 2 family home with 4 bedrooms 3 bathrooms
4 Bd | 3Full Ba
$4,500
… use a smart phone as a keyless remote for a car?
Thanks