What are some iOS5-only and/or iPhone 4S-only Hidden Tips/Tricks? Possible Duplicate:
  What tiny thing in iOS 5 makes you smile, or has caught you off guard?  




Be sure to specify if your tip or trick is for all iOS5 devices, or if it is restricted to the iPhone 4S only.
iOS5 Camera Tip: To keep your auto exposure &amp; focus fixed at where you want it, just tap the screen &amp; hold it until the box pulses.

via @Photojojo