It also helps that the app keeps whatever is in that folder synced -- if a co-worker or a classmate uploads a new file or updates one, you'll get access to it as soon as your phone goes online. Like we said, though, this is a "premium" feature that you can only access if you have a Dropbox Pro, Business or Enterprise account. We're afraid you'll have to upgrade if you only have basic Dropbox. The feature will go live on the latest version of the Android app within the next few days. If you have an iPhone or an iPad, keep an eye out for its rollout to iOS devices early next year.