Hello MacRumors, I am having issues with my iPhone 3g connecting to wifi. When iOS 4 came out, I updated my 3g, but only experienced many problems, one of which was with the wifi. It would not remember my home network password and would ask me to join the network in the middle of apps that do not use the internet... Anyway, I switched back to 3.1.3 about a week ago and I have not been able to connect to wifi at all ever since. I have power cycled my router, done 2 full restores on my iPhone, and nothing. Wifi is turned on, but I am not prompted to join a network in Safari or Opera Mini, and Wifitrack does not detect any networks in range. Any help or suggestions would be greatly appreciated. Thanks!