Iphone 4 wifi broken

fi

Hope this is the right place to post, but i had my iphone 4 stolen at a wedding, and someone dropped it down the toilet and it was recovered and returned to me, i brought it to a repair shop to be deionisized or something, to get it to turn on, they got it fixed and it is sin free, but everything works on it EXCEPT the wifi, is there anything i can do to get the wifi to work? it and the bluetooth is greyed out. the bluetooth just keeps spinning, and the wifi tab is greyed out i should say.

the shop tried everything but said there was nothing that could be done but i thought id ask here as the phone is sim free and works perfectly other then has no wifi. any ideas anyone?

Thanks in advance.
Fi.

guil

http://support.apple.com/kb/TS1559

fergusb

The Wifi on my iphone4 stopped working a few months ago for no apparent reason. Would pick up a network but only when standing beside a router and even then would drop off.

My solution was to open up the iPhone, remove the Wifi Antenna, put it back and put everything back together, worked perfectly and still working a few months later... But its not for the faint hearted (some of the screws are tiny), and will invalidate any warranty. Instructions can be found here:
http://youtu.be/ClFBL8JZNlc

fi

Yea i tried that reset thing before to no avail. i think this is a lost cause what a waste especially as its sim free.