Is there any way which I can access the files I have stored on my Time Capsule using the iPhone?

Currently the iPhone is connected to internet using wireless internet that the Time Capsule is broadcasting.

It would be more interesting if there is also a way to access the files from anywhere around the world using any internet connection.

I have searched the entire youtube and it seems that no one tried to do this

Your help will be much appreciated.

Thanks in advance!