When the iPhone 5 and iPod touch 5 went 16:9 there was a risk that, while browsing the web in landscape, the top and bottom navigation menus in Safari would not only look ridiculously long, but the screen would look far too short to be enjoyable. Luckily, Apple thought of that and included a new, full-screen mode for Safari in iOS 6. Using full-screen, every pixel of that new, widescreen display is available to show you content and nothing but content.
Here's how it works.
Launch the Safari app from the Home screen of your iPhone.
Navigate to the page you'd like to view in full screen mode.
Rotate your iPhone or iPod touch so it's in landscape mode if you haven't already.
Tap the Full Screen button in the bottom right hand corner. (it looks like two diagonal arrows.)
Tap the Full Screen button (now transparent) again to return to regular mode.
You can now browse to your heart's content in full screen mode until you choose to turn it off. How do you like that bigger screen now?