Here is where I am today: All calls in/out successful. I am able to send and receive SMS and MMS to all Apple users. I am able to send and receive SMS and MMS to non-Apple users on the Verizon network. I am able to send and receive MMS to non-Apple users not on the Verizon network. I am NOT able to send SMS to non-Apple users that are not on the Verizon network. Apple has checked all settings and has verified accuracy. T-Mobile has verified that there is no dual service after porting. When SIM is placed in a different phone the same behaviors are observed therefore it is not a hardware issue. Totally stumped!