How to access Time Capsule Hard Disk from my iPhone

Hello guys!

First of all, sorry for my english.

I have an Airport Time Capsule with 2Tb HDD. I configure it with Time Machine for backups and works great.

My main problem i can't access to this HDD from my iPhone. I was searching info on the internet but everybody's says its impossible. Its so strange because i have a router and an iPhone from Apple and i can't manage the HDD from my iphone. I know i have apps like Documents 5 but, **** logic use a 3rd app ...

Can u support me?

Thanks you!