New Windows Phone 8.1 Features found in Developer
Pre View Leaks.
1.VPN support confirmed.
2.You can choose
your own default messaging app.
3.SkyDrive renamed to
4.Back button does not terminate the app. Instead, it
will suspend them just like in Windows 8/RT.
5.There is a new
app model called Universal App which will contain templates to build
Windows RT and Windows Phone apps.
6.Apps can be installed on SD
card and developers can prevent users from doing it for their apps.
7.New Xbox Music and Xbox Video apps replacing Music+Videos ap