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北京时间4月9日来自美国的苹果公司正式对外发布了他们的全新收集操作系统-iPhone OS 4.0。虽然在这次的发布会上苹果一共公布了关于iPhone
OS 4.0的多达100多项的更新，但是对于我们的普通消费者而言无疑最为关心的是其中关于多任务处理、性能的提升、以及全新操作方式方面的变化。
iPhone OS 4.0
夏天正式推出iPhone OS
4.0
然而全新的iPhone OS
4.0在发布之后是否真的给大家带来了上面的这些变化呢？所谓的多任务处理是否真的就能满足大家的需求呢？带着这样的疑问我们今天就来好好的向大家详细的刨析一下iPhone
OS 4.0中的种种更新内容。
iPhone OS 4.0的主要特性
•Multitasking.
•Spell check (like on the iPad).
•Bluetooth keyboard
support (again, on the iPad).
•User-defined wallpaper (a jailbreak
favorite).
•Tap to focus when recording video, just like with photos, and a
5x digital zoom for the camera.
•Playlist creation and nested
playlists.
•App folders for sorting apps! You can even put an app folder in
the dock.
•Enhanced Mail! You can have a merged inbox view, switch between
inboxes quickly, and sync to more than one Exchange account. There's also
threaded messaging (at last!) and in-app attachment viewing.
•iBooks, just
like on iPad, only smaller. You can wirelessly sync books between platforms, a
la Kindle.
•Enterprise features, including remote device management and
wireless app distribution.
•Game Center. It's like Xbox Live, but for iPhone
games. Includes achievements, leaderboards, and match making. It will be
available as a "developer preview," and out for consumers later this
year.