A number of iPhone users are reporting a loss of Wi-Fi functionality after upgrading to software 3.1.3. Based on an Apple Support discussion thread, the problems date back to the update’s release in February, and appear to affect mostly first-generation iPhone and iPhone 3G units, although a small number of iPhone 3GS owners also claimed to have experienced the issue. Some users state that their iPhones now have the Wi-Fi option grayed out,…
