Can you still use Windows phone in 2020?

Yes. Your Windows 10 Mobile device should continue to work after December 10, 2019, but there will be no updates after that date (including security updates) and device backup functionality and other backend services will be phased out as described above.

What can you do with a Windows phone in 2020?

Users will still be able to create automatic or manual backups of apps and settings until March 10, 2020. After that, there is no guarantee that those features will continue to work. In addition, features such as automatic photo upload and restoring from a backup may stop working within 12 months after March 10, 2020.

Can you still get apps for Windows phone?

Youll have (potentially) dozens of third party applications installed, plus relatively recent updates of some of Microsofts properties (OneDrive, OneNote, etc.), most of which still work. If you reset the phone completely then you wont get any of these back.