The nicest thing about having Dropbox on a phone, at least for most users, is the ability to instantly back up photos as soon as they're taken. Accessing other files stored on the cloud is sort of secondary, if only because the mobile client doesn't constantly sync files down and up, like the desktop versions of the program do. Today Dropbox is expanding its capabilities in that area with permanently-assigned offline folder access. But make sure to read the fine print, power users - there are still some important limitations to this feature.

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