求翻译：iPhone 4 comes with amazing features for business right out of the box. With multitasking, run your business apps at the same time and instantly switch between them. Place a video call with coworkers and colleagues using Facetime. Keep all your business apps organized and just a tap away with Folders. Mail on iPhone is also more powerful than ever. View all your accounts in a unified inbox, see threaded messages by subject, or quickly switch between accounts. And with the Retina display, everything you see and do on iPhone looks amazing.是什么意思？

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