The Nokia Lumia 520 is the most popular Windows Phone of all time. The combination of its low-price and capabilities had the phone selling like hotcakes in emerging markets. In the U.S., the Lumia 520 and its T-Mobile branded brother (the Nokia Lumia 521) sold well. A sequel, the Nokia Lumia 525, had the same specs except that the amount of RAM was doubled to 1GB. This allowed the newer model to support more apps and content than the original.

The next Lumia phone in the entry-level "value" segment, is the unannounced Nokia Lumia 530. This handset is tipped to be called the Nokia Rock, according ...


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