Windows 10 Mobile Upgrade Advisor App Download Better Free

As of April 2026, the app is no longer functional because the Windows Phone 8.1 Store officially closed in December 2019 . Since you can no longer download apps or access the official store on legacy Windows Phone 8.1 devices, using the app to "opt-in" to the upgrade is no longer possible.

Originally, you could find the directly in the Microsoft Store on your phone. The listing was free, required no login, and was less than 10 MB. After opening it, the app would either: windows 10 mobile upgrade advisor app download free