 On January 10 , 2011 , Microsoft announced Windows Embedded Handheld 6 @.@ 5 . The operating system has compatibility with Windows Mobile 6 @.@ 5 and is presented as an enterprise handheld device , targeting retailers , delivery companies , and other companies that rely on handheld computing . Unlike Windows Phone , Windows Embedded Handheld retains backward compatibility with legacy Windows Mobile applications . 
