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As a long time smartphone and iPhone user I think the most impressive improvement is the 1 gb of RAM that is now available for programs. This is a huge improvement to the performance of the device. In addition to programs being snappier pages don't need to reload in Safari almost every time you switch tabs. Aside from being annoying this gobbled up data which is a concern for users that don't have unlimited data plans.

I also think LTE is a huge improvement over the 4S. Data speeds where I work are about 5 times as fast as AT&T's "4G".

And yeah, the screen is nice too.
 
Larger screen is much appreciated. I like that the phone didn't get wider. This was a concern when I heard of the size, but I have to say, I really like it!

Ads are much less intrusive with the larger (taller) screen size! :D
 
I really like

the Screen #1
LTE
Panorama (i know this is on the 4S, but it's really cool)
Build materials

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nah the video quality cuz I've loaded it up with 1280x720p movies and they show perfectly full screen so it's a 720p HD screen to me lol

It's funny, too that people care about that number so much. I know the pixels are so small I can't tell them apart. That's good enough for me
 
It is the perfect compromise of screen size, phone size, and weight. Especially in the midst of a frenzy of enormous phones on the market. I didn't want a bigger screen, but the extra height makes calendar, websites, and other apps more useful, but the light weight and thinner design makes it feel like a smaller phone. Just don't make the screen any bigger going forward. That's what iPads are for.

LTE rules.
 
Yeah, panorama!

jBG2L.jpg
 
After Almost a Week Using It, Going back & Forth, Too many now:
Sexiness
Speed
Panorama
Display
iO6 (even Maps, loving it)
Smarter & Wittier Siri plus her Turn by Turn navigation
Passbook
Speakers Sound Quality
Calls Quality
Size

My all-time favorite phone!

All I Need Now is For All My Favorite Apps to Update For iOS 6 & iP5!
 
yes i am loving my iphone 5 black 32gb and the screen is better from the 4s the colors look alot clearer and crisp and att lte is crazy fast
everything is great loving it :D:D:apple::apple:
 
I'm very impressed by the fact I have to toggle LTE 5-10 times a day and that it will drop all data intermittently while still showing being connected to LTE. Did I mention that LTE on this phone is fantastically bugged.
 
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