No Verizon Service; Force Roam

[gmidropout]

I have zero Verizon service at my desk at work. My coworker forces his T-mobile iPhone to roam on our companies AT&T repeaters. I know Verizon and AT&T use incompatible service; is there any hope or am I FUBAR?

 

[razor2006]

When I travel to Maryland where I have no VZW coverage, my DINC roams on Sprint's voice network. I have no data access though.