I am not sure if this is the right place to ask my question. If not, please let me know a better place to ask it.
The question: I have a phone with bluetooth and is connected to a car, so you can use the phone hands-free. And when entering the car with the phone and bluetooth activated, the connection is made automatically.
But after some time, this connection is not made any more automatically. You have to pair them again. As far as I know there has neither been a system upgrade on the phone nor a new app was installed.
I am not asking for a solution, but for the possible reasons why you have to re-pair the car with the phone after some time (happened already a couple of times, after some months or so). What could be the reason for that to happen?