What do I do if my Wi-Fi is greyed out on my iPhone?

If your WiFi button is still grey, go into Settings > General > Software Update and make sure your device is up to date. If your iPhone is up-to-date and you’re still unable to turn your Wifi on or off, then the next step is to perform a full backup and restore of your device.

Why is the Wi-Fi on my phone greyed out?

This is often the result of a software bug or software glitch on your cell phone. There are a few ways that it might have crept up on your phone. Whether it was the result of a bad application, something picked up online, or something that might have been totally outside of your control.

How do I fix greyed out Wi-Fi?

The steps are as follows:
  1. Verify that airplane mode is off by tapping Settings > Airplane Mode.
  2. Reset the network settings by tapping Settings > General > Reset > Reset Network Settings. …
  3. Ensure that your device is using the latest software. …
  4. If your issue is still unresolved, perform a software restore in iTunes.