I am unable to join my own wifi network with new iphone 5
I am unable to join my own wifi network with new iphone 5. It has the latest software downloaded too. Keeps saying unable to join network after I type in the password. All my other devices are able to join but just not the iphone. I've called Verizon and my internet provider and they have been unable to help. I had no problems with my iphone 4 with this very same issue. Please help or I'll be forced to return this phone. I have 13 days left.
MacBook Pro (15-inch, Mid 2012), Mac OS X (10.7.5)