While Sony intrigued us with the Xperia L's blend of a low-end smartphone with a higher-end camera, it wasn't very specific on just where we could eventually buy one: "worldwide" doesn't help, folks. Courtesy of an FCC filing, there's now a hint that the phone might show up in North America. The L has surfaced at the US agency carrying HSPA-based 3G compatible with the likes of AT&T, Straight Talk and T-Mobile, as well as Canadian carriers of all sizes. E