Cannot Change Ringer Volume, Iphone 4

I am having some issues with the ringer volume on my iphone 4.

Cannot change the ringer volume with the side buttons, when I press them the ringer volume icon apperas but with no bars underneath it and unable to change it.

I have Ringer & Alert set to Change with Buttons.

However I have seen that when I press the home button twice and swipe to the mirroring icon this phone does not have itself in the list, but has my Apple TV's and the Dock Connector. IN my other iPhone it has the iphone.

I cannot chnage it from the Dock Connector setting.

Any idea on a fix. Did a full restore and this did not help.