How can I fix my wifi access on my iphone 4s?

My wifi access button is greyed out, so I can't access wifi.

Hi olsenj1946,
If you are having issues with a greyed out or unresponsive WiFi control on your iPhone, you may find the following article helpful:
iOS: Wi-Fi settings grayed out or dim
http://support.apple.com/kb/ts1559
Regards,
- Brenden

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