With 8 hours of talk time, and 24 hours of audio playback, iPhone’s battery life is longer than any other ‘Smartphone’ and even longer than most MP3 players.
My phone, the Nokia E61, has 9.5 hours of talk time. I’d say it’s a smartphone, I can do email, browse the web, and it has 3G data and wifi. No camera, but I can use third-party applications!
I’m sure that the iPhone is a great device, but it still falls short in some areas.
(Thanks Jim for the idea and the links.)