Help can't switch on i-Fi?

[kennymcd]

I was playing about with some buttons on the phone and now the Wi-Fi won't switch on, it keeps coming up with the message "Unable to scan networks". I tried to reload theSSID from Superhub but still not working. Can anyone tell me how to fix this problem. Phone is Galaxy Apollo GT-15801
Thanks
Ken

 

[Fredhandle]

I'm having the same issue on three identical devices. Even WiFi Fixer doesn't help.
Fred