unlock my phone to be recognized by other devices?

[Android Central Question]

I got my unlock code, and I was told to enter it when inserting a new SIM card.

However, I want to unlock my phone without a new SIM card, so that my car's phone system can recognize it.

Is it possible or i have to go to the provider?

Thanks,

 

[nfld_sapper]

unlocking it to use on a different network should have no bearing on whether or not your car recognizes it...