This question is a duplicate of Can an Android phone be used as a Bluetooth headset/speakers? from 2011. I am asking because I suspect Android may have been subject to an update or two since then.
My use case is:
- Old car with aux input
- Tablet screwed into the dashboard
- Tablet audio out into the car radio and wired microphone next to the rearview mirror into the tablet
I want to get in my car and take a call, without taking my phone out of my pockets. I've been searching an hour, reading 25-page long forum threads, still no definitive answers and almost all threads are from 2012 or so.
With all the people screwing tablets into their car's dashboard, there just has to be a way to do this, right?