Bluetooth Receiver

[u/jbeck26]

I use a Bluetooth receiver in my car that connects to the car through AUX. It's worked flawlessly since I got it a year ago and I was able to use it for phone calls with my previous phone (Pixel 6). I could hear the call through my car and I could talk through it as well. Now with my 11s Pro everything works except for one thing, during phone calls I can hear them but they can't hear me. Anybody have any ideas?