WiFi Won't work anymore

[Lights2486]

Whenever I try to switch on my WiFi, the antenna appears in the top but there is no more activity. I Have tried the following: (and yes...I used the switch on the side of the phone)

1.)Updated the Rom...nothing
2.)Checked the settings...nothing
3.)Used WiFiFoFum to see if that would work...nothing
4.)Used spbphone to see if I can manually turn it on...nada

Is there any other suggestions, or should I call sprint for a replacement?