My wifi on my Iphone 4s won't turn on

Question

The Wifi on my phone is grey and not accessable. I restored to factory settings and then put what I'd backed up on my computer back onto the phone prior to checking if the wifi was working. I don't believe that would have made a difference but before I restore again, has anyone run into this problem?

Answer 1

Here's an article with 2 fixes to try.  No patch, just some simply setting changes.
http://www.techradar.com/news/phone-and-communications/mobile-phones/ios-8-wifi- battery-drain-fix-problems-1266599
Try this...Go into Settings > Reset > Reset Network Settings solved the iOS 8 Wi-Fi problems. Don't worry, this reset only wipes your Wi-Fi logins.
If not that, try this
Others have found that heading into Privacy > Location Services > System Settings (all the way down at the bottom > and turning off Wi-Fi Networking did the trick.
And for Battery drain issues, there's this
To find out which apps are draining your battery life, visit Settings > General > Usage > Battery Usage and be sure to close or uninstall energy-sucking apps you don't need or use.
The second suggestion is to back out of there as far as the General settings menu. Head into Background App Refresh and turn off any apps that don't demand your immediate attention (Dropbox, Podcasts and Weather are three prime examples)
Beyond that, you can use the usual anti-battery draining techniques in your toolbelt.: dim the brightness, turn off email push notifications, limit app notifications and disable Bluetooth and Wi-Fi when it's not in use. It's easier than ever to toggle Wi-Fi and Bluetooth with the swipe-up-from-the-bottom Control Center overlay introduced in iOS 7.
Hope this helps a few