Is there an official policy behind the 'S' in 'iPhone 4S' and 'iPhone 3GS'? Has Apple stated any meaning for the 'S' in the iPhone product designations '4S' or '3GS'? Does it mean the same thing in both product names?
Apple itself hasn't released any information regarding the S. The three most common theories out there seem to be "S" for "Siri", "S" for "speed" and "S" for "Steve". My guess is the "S" means "speed", like the iPhone 3GS.