Great… iPhone 4 now have new IOS. It is IOS 4.3, you can try this IOS. It have two new function in this IOS. that is “Personal hotspot”,”iTunes Home Sharing”. In personal hotspot, this function mean that you can just play in like HTC HD2 wifi router fucntion. share your cellular data connection with your Mac, PC, iPad, or other Wi-Fi-capable device. You can share your connection with up to five devices at once over Wi-Fi, Bluetooth, and USB — with up to three of those connections using Wi-Fi.4 Every connection is password protected and secure. And it’s power friendly, too. iPhone detects when your Personal Hotspot is no longer in use and turns it off to save battery life. beside this, we still have iTunes home sharing. This is powerfull function too, you can play your entire iTunes library from anywhere in the house. If it’s on your Mac or PC, you can play it on your iPhone, iPad, or iPod touch over a shared Wi-Fi network.3 And not just music. Watch a movie or TV show. Play a podcast. Or listen to an audiobook. On whichever device you want — without having to download or sync.

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