Wifi not working on iPhone 4s on iOS8 or Later

 If your iPhone has refused to connect to a wireless network especially when the wifi is greyed out under settings. I have a quick temporary step that has worked for me. Follow these steps;

1.  Turn off your iPhone or iPad.
2.  Put your device in a ziploc bag and seal same.
3.  You now put this in a freezer for about 15minutes.
4.  After 15mins remove same and power it on.
5.  This process should get your wifi up and running.

ps. You can try this process at your own risk and i wont be held liable for any damages whatsoever to your iDevices.

Alternatively one can do one or a combination of the following fixes to get your iDevice up and runnig again.

Fix 1Reboot or Restart your device, Press and Hold Sleep/ Wake button until you show Slide to power off toggle black screen, Otherwise Force restart By pressing and Hold Sleep/ Wake + Hold button at once.
Fix 2
if you are using WiFi dongle or USB adapter then restart it, Might be your device can’t gathering data over air. Or Might be issues with ip conflict.
Fix 3
Reconnect after erase WiFi network details from iDevice. Go to Settings > Wi-Fi > Tap on (i) icon > Forgot This network. Reconnect network by tap on name and enter correct security password.
Fix 4
This one is very useful to most iOS users. WiFi connection waiting for long time/ WiFi continuously searching or WiFi not working on iPhone.
Reset WiFi network setting. Settings > General > Reset > Reset Network Setting.
After that you have to reconnect password as a new connection.
Fix 5
Please check your device up to date, running on latest iOS version. With this you can short out minor bug fixed and improve network interface.

If you tried any alternative fix and it solves a WiFi disabled or WiFi not working error on iPhone, iPad or iPod Touch please share with others in the comments section.

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