Lumia 920 and 820 has already received the Windows Phone 8.1 update in several global markets. The same cannot be said for AT&T in the US, as the carrier has been a little slow when it comes to the Lumia Cyan update for its handsets. The carrier has already rolled out the Lumia Cyan update for the Lumia 1520, 925, 1020 and the 520, but it seems more handsets are about to join the Lumia Cyan club as AT&T is rolling out the update for the Lumia 920 and 820.



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