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In February 2011, Nokia announced that it would replace Symbian with Windows Phone as the operating system on all of its future smartphones.

This transition was completed in October 2011, when Nokia announced its first line of Windows Phone 7. 5 smartphones, Nokia Lumia 710 and Nokia Lumia 800.

Nokia committed to support its Symbian based smartphones until 2016, by releasing further OS improvements, like Nokia Belle and Nokia Belle FP1, and new devices, like the Nokia 808 PureView.