My iPhone 4 says searching for network and wifi is unavailable, why is it not working?

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My iphone 4 says searching for network and wifi is unavailiable why is it not workinhg

I cant connect to internet and my phone doesnt turn on either only when i connect it to the charger but cant make phone calls or text and it says wifi is unavailiable and wifi symbol grey
 

kch50428

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Oct 22, 2010
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Re: My iphone 4 says searching for network and wifi is unavailiable why is it not workinhg

Try rebooting.