It's time to improve the performance of your mobile phone, perform lumia update OS that has been supplied by the developer of Microsoft's.
Previous OS Windows phone 10 it uses the Build 10. 0.10586. 71, the next will be in soon on replace in development Windows phone 10 build 10. 0.10586. 107. as whether this new form of Build, all will be see, after you update to the latest build of Windows phone OS from Microsoft.