As seen on Microsoft Windows Phone Blog posted on Feb 23, 2014 by Joe Belfiore:

Broadly speaking, our partners overall are the engine of growth for Windows. In addition to our great partners HTC, Huawei, Nokia and Samsung, today in Barcelona we announced we’re now working with nine new Windows Phone partners, including: Foxconn, Gionee, JSR, Karbonn, Lava (Xolo), Lenovo,LG, Longcheer and ZTE. Collectively, Windows Phone partners make up an impressive 56 percent of the global smartphone market, according to IDC.

This is exciting news for phone buyers around the world. With seven of the top 10 global OEMs—in addition to some of the leading brands in China, India and Taiwan— now collaborating with Windows Phone, you can expect to see an incredible new range of devices across screen sizes and price points. And of course we’re committed to delivering this device diversity without compromising the consistent, designed-around-you Windows Phone experience our users have grown to love.

Some of these partners are names that might not be familiar to you, but they’re leading the global expansion in the smartphone category. They bring competitive products to market because of their knowledge of the local markets, channels and consumers. They are important partners that will help broaden availability of Windows Phones to new and emerging markets.

source: Windows Phone Blog