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Seriously - I don't even know where to begin. I'd have to say the "killer" feature for me would have to be the HD video recording (720p at 30fps).
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Proabably "Facetime" considering it's open which correct me if I'm wrong it will be cross-platform. Me on my Android chatting with my Friend on a iPhone 4! |
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Multi-tasking is a big one. As for showing off the true power of the OS, I think developing iMovie for it was a great move, along with the new name to separate it from the iPhone OS ( finally ). I can't really say much about the display until I see it, but it really interests me. |
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The battery life, multi-tasking and how it uses stainless steel. |
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multitasking...a huge one for me...the new facecalling...all sorts of unnameable features. |
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I like the new front facing camera and the new gps-ish system that comes with it! |
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iPhone OS4 and HD video recording, iMovie ....that will be my next phone (now i'm with 2G), its design is simple and sexy, and it has many cool features. |
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I think the killer feature of iPhone 4 is the screen. the fact that you will be able to see so much more of just about anything is awesome. if only AT&T was less of a failure, then the iPhone would be perfect. |

imovie is the killer.
I'd have to say the antenna is the iPhone 4s "killer" feature.
LoL, the antenna is the 'killer' feature.
iPhone 4 Drop Test With Bumper Case