According to the foreign media WP Central, the installation rate of Windows Phone 8.1 has been rising steadily since its release. At present, the 8.1 system accounts for 39.1% of the total Windows Phone. According to the current growth momentum, coupled with the large-scale launch of Nokia's Cyan system, the installation rate of 8.1 system should exceed 8.0 in October this year.
In the Windows Phone market, Nokia (or Microsoft Mobile?) accounts for 95% of the market, while Lumia 520 is the best selling Windows Phone phone.
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