I know there are apps on the market for this and I'm not even sure if this has been mentioned for the EVO LTE, but there is a cool little block caller feature hidden away. I found it by going through the people app->menu->manage contacts->blocked callers->add. If this isn't anything new to everyone I'm sorry for being late to the party. :smokingsomb: Doesn't seem to be a way to add unknown numbers to the list of blocked callers, but other than that it's good stuff.
PS - If anyone else knows how to get to this other than through the people app, please do tell. TIA
PS - If anyone else knows how to get to this other than through the people app, please do tell. TIA