Re: iPhone 4S reviews
If a phone was just a phone, the smallest that you could hold would be the best size. Phones are used more for content consumption than actual phone calls for most users today. Do you see people finding the smallest TV at home for consumption?
The "right size" screen is the biggest that you can comfortably use that still fits in your pockets. My HTC Incredible fits my hand well, but I'm not a big guy. My boss can barely use my phone but he's very comfortable with his 4" screen. Since he has bigger hands he also has bigger pants with bigger pockets.
The question is are there enough "larger" people for Apple to dedicate a separate product line and do it in a way that "is innovative and for everyone!" and doesn't give any credit to the other phone makers.