Originally Posted by Alans
Is it possible to lock the screen in portrait mode?
Yes, you can. Go to Settings->Display (or Screen, sorry, my Vox is in French). There will be an option for automatic screen rotation or some words to that effect. It should be checked by default. Tap it, it will uncheck it and lock it in portrait.
On the other hand, it seems impossible to lock it in landscape, if anyone wondered.