Smartphones suck as phones
As a confessed smartphone junkie, having owned every major platform of smartphone (including iOS and android 2.x), I have found that leaving the house with a full charge in the morning (after 9am) and only being able to make it to early-afternoon (3pm) on an extended battery – is the sorry state of mobile computing.
This is a lot better than the 3-4 hours I can squeeze out of an iPhone and may be the most compelling argument for me to either
1) go back to a dumphone
2) buy an iPhone4. Which would last, maybe 6 hours under heavy nerd usage?