Wifi wont turn on, on my iphone 4s

Hi can any one help, i purchased this iphone 4s new less than six months ago, the wifi from day one was coming and going, now no wifi at all, can this be fixed, or if i take it into a apple store will it be replaced, i am a apple fan, however im getting close to buying another, and its not an iphone.

Hello hartlie290,
Welcome to the Apple Support Communities. if you are having issues with Wi-Fi on your iPhone, the following article will give some troubleshooting steps to help isolate the issue.
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/ts1398
Regards,
-Norm G.

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