Forgive new iPhone user, couldn't find where to post "how to" questions. I have tried to lock in portrait mode by sliding right when the app switcher items are shown, but nothing happens. I'm a blind user so use VO all the time. Is there an option using a mini bluetooth keyboard? Also I have many questions about keyboard commands such as double tap with 2 fingers, 3 finger swipe and many others with a bluetooth keyboard, and need tips to make the use of my iPhone as quick as was my use of my Nokia E72. Where can I post these questions please? Thanks. Kate.