Windows phone used to have this and it was called Continuum. Although it couldn't actually run proper desktop apps, only a few office apps made for it. The prom

Windows phone used to have this and it was called Continuum. Although it couldn't actually run proper desktop apps, only a few office apps made for it. The promo page for it is still up despite windows phone being dead for a few years now. https://www.microsoft.com/en-us/windows/continuum https://www.microsoft.com/en-us/windows/continuum