Even if Internet wasn't polite, the meaning of him being in a dead zone was no good to anyone at all. Though Colin was the more sentimental of the two Telecomms and would have picked up the other New God without hesitation. After all, he had an asshole of a brother that he dealt with constantly so something could be said for being used to bluntness and the like.
Colin hardly doubted that Joshua was in a third world country - if he really was, though, that was a revolutionary feat itself and one that Colin wouldn't be surprised for Joshua to execute by himself - so he concluded that most likely a dead zone would be the case. If so, then getting there directly would be a problem, even for himself. But getting to somewhere close and then perhaps renting a car would be possible.
"Alright, Joshua, just breathe. I can still get to you by lines, but you gotta tell me one place where you last remember that was close by. It'll get me there quicker, trust me."