How to update the IPhone without iTunes?

I've looked it up on the web, but they all mention going into Settings and pressing the download button, mines doesn't come with that though. Is there another way for me to update for my phone to IOS7?

Go to settings, you can update your phone from there.

Yes there's but it's an effort, go onto Pirate bay or one of those sites look up iOS 7 update, click on it and it'll have further instruction on how to do it

Yes, go to settings and then Updates.

If you have iOS 5 or higher you can download updates directly to the iPhone. If you have an earlier version of iOS you will need to connect to a computer with iTunes to update to the higher version first.

http://support.apple.com/.../kb/HT4623