iOS, Fix the “Unable to Join the Network” Error

How to Fix an “Unable to Join the Network” Error in iOS

If you can’t join a wireless network because of the “Unable to join the network” error message / alert

In most cases you can resolve the issue with these steps:
1. Go to Settings > General > Reset > Reset Network Settings
2. Enter the devices passcode and confirm the reset
3. Let the iPhone/iPad restart, you’ll see a spinning cursor on the device as it finishes the reset before the device boots back on
4. Go back to Settings > Wi-Fi and join the network again

The MacObserver