Answer in a car on steering wheel via bluetooth

so normal calls you can't answer thru the steering wheel via bluetooth? what happens when you try to answer? nothing? can they hear you or vice versa? what phone do you have? is the steering wheel the one you need to connect to? or is it connecting thru the radio(head unit) and then going to the steering wheel?

basically we need more details as to your problem. just remember, the more details you give us, the better we can help.

 

I took this to mean the opposite of @ocnbrze , in that I think OP means to say that normal cellular calls are answered via bluetooth with the steering wheel controls, but it is not working like that when apps are used.

This may have something to do with how the apps are considered by the bluetooth, and could be the phone and/or the vehicle equipment.

These apps are using cellular data for the calls, not like a typical cellular phone call.

So my guess is that the device and/or vehicle is considering such a data call as media instead of calling it a phone call.

I also use Telegram, as well as other calling apps- but I have never tried to make a call while in a car with them.
Messaging, yes, but no calls.

This is in part due to the horrible data connection provided by T-Mobile.

Anyway, I would first look at the vehicle audio settings for something using the phone as a media source instead of as a phone when trying to use one of these apps for calls.