オリジナル投稿者： asle ,
Is your iPhone on a contract of jailbroken? If you upgraded to 3.1 there are issues where the wifi just dies. It is a hardware problem and just look at one of the many discussions here: http://discussions.apple.com/thread.jspa?threadID=2158541&tstart=0 You can try some of the tricks there but I am afraid it can be hard to heal it. It says "no wifi" meaning the iPhone does not recognize the wifi board anymore. I had this issue on 8GB 1.gen. iPhone and bought a new communication board. I got one cheap(er) on ebay. The battery is soldered to it like here: (http://cgi.ebay.com/Apple-iPhone-2G-Communications-Board-OEM-Replacement-/390200888908?cmd=ViewItem&pt=Cell_Phones&hash=item5ad9c90e4c) No sweat to replace it. The hard part is always to open the iPhone. Good luck and I would spend that money on your iPhone since it seems it is working.