Iphone 4 - Not connecting to wifi (incorrect password)

As sad as it is, you're going to have to restore. It was the only thing that fixed it for me, despite countless hours of work and trying things, restoring was the only solution. I recommend you do this whenever you can, especially if you rely on a jailbreak, as iOS 8.1.3 patches the current one. Good luck, hope this helps.

Crazy - I have spent the last week trying to work out this issue, including a visit to Apple Shop to check that all was well with the wifi. Could join a friend's home network, but after my router lost power and reset to factory settings, no account I set up (either resetting up the original one, or a new one) would my iphone join. Did everything mentioned... resetting router, resetting network settings (several times and in several orders with restarting router etc), upgraded the iOS, tried to add the iphone MAC address to my "allowed" list, resetting the allowed list, clearing the allowed list.... finally THIS solution of inputting the WEP key, not the password, and it works again... YAY!

Hi CateDS,

Thanks for posting the solution. Typing WEP password helped me.

Settings>General>others>wifi name>In security select WEP>password. It works

Hmmm, It does work when setting the iPhone to WEP, even though the router password is WPA2... ***?

Apple, in case you even care (chances are you don't), the setting should be:

➕ WPA2 <-> WPA2

NOT

➖ WPA2 <-> WEP

got it *********?

Hmm and even this only worked once. ***! All my devices work flawlessly with this router (a Dell, an Ipad 2, a nexus 5, a MacBook Air, an AppleTV, but this iphone 4s is driving me nuts. Incorrect password? Incorrect device!

I was reluctant to do this because it seemed too easy, but I tried, and it connected !! Thank you haha 🙂