3 way and txt message bloacking

[imani b]

Does anyone know how to block txt messages or how to work 3 way on a
Audiovox CDM8910?

 

[Nebemzo]

Look in the manual.

 

[crf250r rider]

I don't have the manual

 

[mekoe117]

Don't know your provider but I imagine that common features are pretty much alike. Check here