Is AT&T seriously gearing up to sell a subsidized Nokia smartphone once again in the US of A? Given the company's long absence from being included in any US carrier's smartphone section, it still feels more like a dream than an impending reality, but that image above is certainly hard to ignore. According to Pocketnow's sources, the first press images of the Nokia X7 are legitimate, and the AT&T branding isn't by accident. Pu