So...I'm taking a 3 month vacation in Tokyo from September 1st, and before I research this i'm concerned if the Nexus 4 will broadcast on Japanese frequencies. I don't think it will, I used to live in Tokyo, and their frequencies are different, and even though i snag a sim from the keitai (cellphone) rentals at Narita and use it in my Nexus, I don't think anywhere in the Nexus 4's documentation (that came with the device) specified that it was an international phone, NOR, that it needed to be, NOR that there was another Nexus 4 that Google mismanaged in promoting...(alluded to the nexus 4 play.google.com's 4 month backlog, in winter 2012/2013, and no international phone in their inventory at the time of said atrocious backloging)