Grey Wifi on Iphone 3G

[lacherrie]

I know the title's pretty vague, but that's basically my problem. I've been looking around the internet for a fix for it but hasn't seen one so far.
Everything else on it works, just the wifi bar is greyed out and says "No Wi-Fi"

I've tried to reset the network many times, and also tried to reboot it and also resetting the entire iphone. Also, my iPhone isn't jail broken.

Is this a hardware problem?

Also, would it be possible to trade it in. Although it's second hand, so I don't have the original box and receipt etc...

Please help, thank you!

 

[Applejuiced]

I know the title's pretty vague, but that's basically my problem. I've been looking around the internet for a fix for it but hasn't seen one so far.
Everything else on it works, just the wifi bar is greyed out and says "No Wi-Fi"

I've tried to reset the network many times, and also tried to reboot it and also resetting the entire iphone. Also, my iPhone isn't jail broken.

Is this a hardware problem?

Also, would it be possible to trade it in. Although it's second hand, so I don't have the original box and receipt etc...

Please help, thank you!

Sounds like the wifi died and yes it would be a hardware issue.
Apple, AT&T or other places that sells iphones dont do trade ins.
If its still under warranty you can find out on the site below by entering the serial number. But an iphone 3G I highly doubt it would still be covered cause its old. You can pay them $200 to replace it but its not worth it IMO. Better off getting a new iphone.
https://selfsolve.apple.com/GetWarranty.do