blue moving vertical line on iphone 4s

hey guys ever since i updated to ios 7 anytime i make a call or its active (texting or going online) a blue vertical line comes up and moves drom one side of the screen to the other it goes away but its annoying and it worries me

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iPhone 4S, iOS 7.0.2

Posted on Sep 30, 2013 1:49 PM

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blue moving vertical line on iphone 4s

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