rSAP client to connect to rSAP server containing SIM card

[Toug]

I would like to have an Android rSAP app to connect to a phone containing the SIM card and the rSAP profile.
Is that possible?

[admin]

Theoretically yes, practically no. You'd have to rewrite the baseband software.

I always wonder why you would want that? What's the use case?

[Toug]

I have three phones. One I use like a phone (incredible ) the second one I use like a incar system and the last one like a 4G access point.
The SIM card is always in the phone.
I am able to share internet connection, to the incar system, but this system can't receives the SMS or dial the calls.
I use a different phone for the 4G access point because this one need kitkat for the app "Port Forwarding ultimate". (Don't work with lollipop).

So a rSAP server in my phone would be usefull.

[Toug]

Correction : rsap client would be usefull. Rsap server already exist.