This is really interesting. Google may have avoided adding LTE to the Nexus 4 to avoid the minefield of capability between different countries and wavelengths, but some enterprising hacker at xda-developers have worked out a very specific way to get the Nexus 4 to latch on a Canadian LTE network with the phone’s debugging menu — at least on LTE band 4 (1700MHz and 2100MHz) on Canadian carriers Telus and Rogers. They went on, and elaborated that “Band 4 (AWS) could essentially be supported with the power amplifiers and transceiver that already are onboard the Nexus 4, but again it ultimately comes down to a particular OEM choice whether these get supported.”
Which makes total sense, doesn’t it? But still, while it is not practical, it is possible.