I set Project Summary > iPhone / iPod Deployment Info > Supported Interface Orientations to portrait only mode.
This work well on All simulatiors , iPad(iOS 5.1) and iPhone(iOS 6.1).
But after I upgrade iOS on iPad from 5.1 to 6.1.2 then
The application running on iPad become landscape (left+right) mode at application start up.
How could I fix this?
Try going to YourApp-Info.plist file in Supporting Files and make sure the proper orientations are set for both Supported interface orientations and Supported interface orientations (iPad)