Critical Warning on iPhone 6, what should I do?

I

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Critical Warning on Iphone 6

I was casually on my phone watching videos when a window popped up. After that window opened up, a "critical warning" pop up emerged. Now I can not use safari because of that. I am currently downloading ios9. I doubt that will help but I am a student and really need my phone so if anyone could give me advice on how to fix this it would be greatly appreciated. By the way, the phone number on the pop up was a scam. I freaking out and I hope this can end.
 

Ledsteplin

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Oct 2, 2013
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Re: Critical Warning on Iphone 6

Critical warning? What kind? It may be phishing spam. Go to Settings >Safari and clear history.