How to fix Wi-Fi on iPhone 4S with iOS 7?
I can't turn my Wi-Fi on and I've tried resetting network settings and restoring iPhone but I still can't turn it on. It's just greyed out I can't switch it over at all. What can I do to turn it on? Please help. & I can't update to latest iOS that fixes bugs because I can't update without being connected to Wi-Fi.:/ I'm annoyed.