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This seems to be a recurring problem for this model phone. I have not seen a solution in reviewing the other posts. My new Iphone4 is unable to access the home wifi even though other devices in the house do. It tells me the password is not correct.
I have turned the At&t router/modem off for 5 minutes and the iphone off for 5 minutes. When I click on the wifi site it is not populated with addresses like my wifes 3g nor does it say renew lease.
Do I have to go into the router and change the password?
Iphone 4 iOS 4