One of the best way to open blocked sites on iPhone/iPad/iPod is through an application open door. In many of the countries websites like facebook, youtube are banned. They can easily be used using this browser. You can download open door using the following link.
https://itunes.apple.com/us/app/opendoor/id543808008?mt=8
https://itunes.apple.com/us/app/opendoor/id543808008?mt=8
