i just found the most important feature about the new iphone / ipad / ipod touch os 4. its called ‘portrait orientaion lock’
- double click the button
the one with the square on it on your phone / ipad / ipod touch. - this takes you to the ‘multitasking’ part.
- swipe left. there is an icon at the leftmost position.
- hit it.
you can now use your iphone / ipad without it flipping the screen!!!!!
Edit: check here for a post about how to use your ipads side switch for portrait orientation lock
