Narvin's Datapad
Any messages -- text, audio, or otherwise -- that need to be sent to Narvin will end up here. This is his personal datapad, so its communication number is not publicly available. The only people who have the number currently are Narvin and Braxiatel. (If you really want to bug Narvin, ask Braxiatel for it.) He keeps it on him at all times, though, so unless he's being shot at/exploded/raided by Darkel/raided by Pandora/blowing up empty buildings/trekking through the Outlands, he'll answer fairly promptly.
Also, it was a gift from Braxiatel, and it didn't even have any spyware on it. It's probably the nicest thing he's ever gotten Narvin. Please don't break it.