The proximity sensor just tells the iPhone that it's near your face when making a call so it can shut off the screen to save battery.
So whats the Game Center thing? Is it like Xbox LIVE or the PSN? Havent seen/heard much about it.. ugh, all this anticipation. i havent wanted something this bad since... well i never wanted something this bad.
This is not my interest at all. All of this thing feature is what I can see in September for the iPod. The same design, gyro, RD, camera and A4 chip better make it. Front camera? I don't think so. There is no point.
Having moved my phone from HTC HD2 the specific reasons are - Apps - all designed in a closed hardware / software environment meaning better looking and better quality Battery - as not user replaceable, the iPhone 4 gave me comfort I could last a day without being plugged in. It does in reality too. Camera - I needed a decent camera. So far it's blows away anything I have used on any other phone. Even the HD video is brilliant. Design - compulsory - I would be seen dead with an un sexy phone. Music - excellent audio chip quality Apple Eco system - I can buy and download apps, entertainment on my phone.
The Retina display. If you're thinking, "I don't see the Retina display" then you'll be amazed when you hold it in your hands and see the high-res display. The sharp text, the clear pictures, faster web browsing, new look, new feel.