Wifi greyed out
Since upgrading to OS 6.0.1 my wife's Iphone 4s will not connect to home wifi. On checking Settings, the wifi button is greyed out and cannot be changed. Since upgrading OS this had been intermittent. I also have a 4S & no problem. I have tried resetting network settings, all settings, switched on and off many times, soft reset with the home & power button and still no resolution. Does anyone have any solution please ?
iPhone 4S, iOS 6.0.1