Nokia Lumia 521 vs. Lumia 520 Windows Phone Market Share in US: Lumia 521 No. 1 in US With 23 Percent [Video]

The Nokia Lumia 521 maintained the throne as the top Windows Phone device in the U.S.

According to AdDuplex, the Lumia 521 held 22.8 percent of the overall Windows Phone device market share in the U.S.

The Lumia 521, however, is not the top Windows Phone device in the world. As Latino Post reported, the Lumia 520 was named the top Windows Phone device worldwide with 26.5 percent in both overall Windows Phone devices and Windows Phone 8 gadgets with 35.3 percent.

In the U.S., the Lumia 521 managed to comfortably defeat its fellow competitors that were mainly fellow Nokia Lumia smartphones and the Huawei Ascend W1.

"Lumia 521 is a breakaway hit again and Lumia 520 has grown too. So, if we combine these two, the situation is pretty close to what we see worldwide," wrote AdDuplex's Alan Mendelevich.

The Lumia 822 finished at second place with 13.3 percent of the U.S. Windows Phone device market share ahead of the Lumia 920's 12.1 percent.

The HTC 8X is the first non-Nokia Lumia device to appear on the U.S. Windows Phone ranks. The HTC 8X represented 10.3 percent of the market share gathered by AdDuplex and enough for fourth place.

Rounding up the top five, the popular Lumia 520 emerged. The Lumia 520 represented 7.2 percent of the market share.

The Huawei Ascend W1, the second non-Nokia Lumia smartphone to appear on the U.S. Windows Phone device ranks, finished at ninth place, or 2.7 percent of the market share.

According to AdDuplex, AT&T is the top Windows Phone 8 mobile carrier in the U.S. with 31.7 percent of the market share. Verizon Wireless represented second place with 27.5 percent ahead T-Mobile's 20.6 percent. MetroPCS placed fourth with 8.4 percent.

Between the Windows Phone 8 and Windows Phone 7 operating systems, Windows Phone 8 represented 85.7 percent of all Windows Phone devices while Windows Phone 7 still accounted for 14.3 percent of users.

AdDuplex collected its data on Nov. 22 with more than 2,087 Windows Phone apps running on AdDuplex's SDK version 2.