Windows 10 Mobile will end support on December 10 this year
On January 9th, Microsoft announced on its official website that December 10, 2019, Windows 10 Mobile users will no longer be eligible to receive new security updates, non-security patches, free assistance support options, or online technical content updates from Microsoft.
According to Microsoft, only device models that qualify for Windows 10 Mobile 1709 support will be supported until the end date. For the Lumia 640 and 640 XL, Windows 10 Mobile 1703 is the last supported operating system version, and its support will end on June 11, 2019.
Officials stressed that termination of support means that products or security updates for the Windows 10 Mobile operating system will no longer be available, and Microsoft recommends that customers migrate to Android or iOS devices after the Windows 10 Mobile operating system terminates support.