Auto Screen Rotation is not enabled for all applications in Omnia 2 unlike Omnia 1. The screen will only have auto rotate function when using SMS, Touch Player, Opera and Photo Album. So many users will not be able to enjoy landscape mode for some applications. But there is a way to trigger the auto rotate function by hardware key.
Map Screen Rotation Button
There's a way to map a hardware button to toggle the screen rotation,
- Run the registry editor and navigate to HKEY_LOCAL_MACHINE\System\GDI\Rotation
- Change the value of HideOrientationUI from 1 to 0
- Go to Window Mobile Settings > Buttons to map it to one of your button
