Are you an iPhone 3G user with a “No Wi-fi” greyed out on your settings? Do you see this when you access your phone’s settings?
For me, I’ve only seen it once. I have a first-generation iPhone.
The solution and fix for this problem was simply to do a soft reset by holding down the top Power Button and the Home Button until it restarted, at which point the wifi was working again.
SOURCE | LINK (Elliottback.com) | LANGUAGE | ENGLISH |