Another feature bundled with the latest update is the ability to grant access to files while you're on the go. If a classmate or a colleague asks for permission to access a specific document while you're on mobile, for instance, you can grant them access through the push notification that pops up. Finally, Dropbox says it has added the ability to edit text for over 120 types of file extensions, giving you a way to edit documents without having to open them on another application or on a computer. All these features are now available on iOS -- since they sound especially useful for trips and vacations, simply update your app before you go.