Meanwhile, millions of devices continue to operate under the control of the OS.
Microsoft has officially stopped supporting the operating system Windows Phone 8.1 at that time as it continues to work millions of devices.
The publication reports that the upgrade of the operating system Windows Phone 8 was released three years ago and was quite large. Windows Phone 8.1 brought support virtual assistant Cortana, design changes and a number of other innovations.
But worthy competition for Android and iOS operating system to have failed, which Microsoft decided to stop producing its own smartphones under the Lumia brand.
Microsoft continues to support Windows 10 Mobile, but recently there has been no new features.
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