Nokia Lumia 520 could be AT&T's next Windows Phone 8 handset

Nokia launched the Lumia 520 in April as its cheapest Windows Phone device ever. It's currently available in many markets around the world, including in the US - where T-Mobile is selling it as the Lumia 521. And it looks like it's going to be released by AT&T, too. Evleaks has unveiled a photo showing an AT&T-branded Nokia handset, unfortunately only from its rear side. Still, it's enough to see that it looks exactly like a Lumia 520.

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