I changed my Wi-Fi password for my router and now I can't connect my iPhone?

Before i changed my Wi-Fi password, my iphone was connected. Now, i changed it and my iphone said it was unable to connect to my Wi-Fi.

How do i fix this? Do i click 'Forget this network" and reenter my new password or what?

Derp.

Your phone is now trying to connect with the old password. Do the math.

Exactly what he / she said.

It's using the old password to try and connect to the router… But you've set a new password which is obviously different, hence why it won't connect.

Try using the new password.

Well like others said you need to use the new password you put in. But if you are still unable to connect, make sure the password has all caps with the letters. If this fails, disable the network from your iphone, then reconnect with the new password.