Fix 'Unable to Join Network Failure (error -3)' error on iPhone

The "Unable to Join Network Failure (error -3)" error message appears on the iPhone when the Wi-Fi network is not connected. In fact, the reasons for this are the same as for computers that are not connected to a home network or wireless hotspot. To resolve these issues, do the following:

Check the SSID name settings on the iPhone to make sure it matches the Wi-Fi hotspot. SSID is quite sensitive case.
Check the security configuration (WEP or WPA parameters) on iPhone to make sure the values (encryption key or password) match the access point. The encryption keys are not case sensitive, but the password is.
If both steps do not fix the problem, fix the security settings on the Wi-Fi hotspot. Contact the access point administrator for further assistance if needed.

Fix 'Unable to Join Network Failure (error -3)' error on iPhone Picture 1

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Marvin Fry

Update 25 May 2019

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Fix 'Unable to Join Network Failure (error -3)' error on iPhone

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