Keeping the
same tiny screen size on the
iPhone 5 will be a deal breaker for me.
What good is the Retina display when it is so small? I read a lot on my iPhone, mostly tech and marketing blogs. I HATE the fact that Safari Browser does not have text reflow. Because of that, you have to
pan side to side to read articles, and that is
super retarded. Thank goodness for the Mercury Browser which at least allows you to increase text size and word wrap upon resizing.
But anyway, the Retina Display is overkill. The iPhone's 3.5" screen does not allow me to enjoy using it beyond a simple phone. If you just want a phone, fine. I understand your argument. But for those of us that don't want an iPad, laptop, notebook, or netbook, WE NEED A BIGGER DISPLAY!
The Evo 4G is the king of the hill when it comes to displays. Sorry guys & gals, but I would take that display over my useless Retina Display any day of the week. I have bad eyesight, and I cannot continue to squint looking at this microscopic display.
If I had my "druthers", I would take the 5" display on the Dell Streak and would be a happy camper. I don't need a tiny phone that "fits your pocket". I need something I can SEE. The bigger, the better. If you had the capability to use an iPad as a phone, I'd be lugging that around on a fanny pack like the old days of bag phones. So you can keep your micro-sized smart phones. Give me something for a blind bat 43-year-old.
Plus, what about surfing the net? Why would we be adding HSPA+ capability (and then 4G in the future) to a device that is so small that your internet experience would SUCK in the first place? With all this attention to faster download & upload speeds, we need a screen size that maximizes the experience!
Ok, I got it out of my system. So here's my opinion of the various sizes:
5"
Make it big like a Dell Streak and I'll pay anything! Bigger is better!
4.3" 
Still would make me super happy. Love the jumbo size like the Evo 4G!
4.0" 
Great improvement, I'd go for it. I love my wife's T-Mobile Touch 4" display. It's still a big plus and looks SO much better than my iPhone 4 Retina Display.
3.7" 
They better not do 3.7". That's not even worth the trouble. I don't know if I would go for that. It better have a lot more bells & whistles to make up for small size if it does.
3.5" 
Deal breaker! Keep the screen size the same, and I make my move to Android. Period.
Thanks! Comments?