Iphone plugged into DYNEX hd television?

I have my iphone 4s plugged into my dynex hd tv, and i want to show a video to my family using the tv. My phone chord is plugged into the USB on the back of the tv, but all the inputs say no signal. Help?

Added (1). Be serious about this, I need some help from people who understand electronics… Not bored people looking to have funny responses that will end up on tumblr tomorrow.

Oh GOD an iPhone plugged into a Dynex? Isn't that against the law in 28 states?

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