Just like with most handsets, the Nexus 5 actually has two models; there is one version for North America and another for the rest of the world. Both models look the same, and share many of the same specs. The buttons, colors, cameras are the same. The differences are in connectivity, something that you don't see. The radios in each phone are a little different...Source: http://www.phonearena.com/news/Differences-between-the-two-Nexus-5-models-D820-and-D821_id48985
