It should be beginning-of-the-semester material for Modern Life 101: Back up your important documents, photos and other files in more than one place. The cloud has made it easier than ever to keep a spare copy should something happen to the original, something that is especially important for easy-to-lose devices that travel with between home, office, and everywhere else. Sharing and storing files in the cloud is likely one of the areas your company's BYOD policy will cover, if it has one.
Some organizations say no to certain apps or to putting company information on public cloud platforms. If your organization mandates the use of particular mobile apps for file-sharing or backup, then the choice is made for you. If not, use what you use on your laptop or desktop, too. Most of the major players in this crowded space such as Dropbox, Box.net, and Google Drive (pictured), offer Android apps for easy integration with your other hardware.