IPhone 5 on T-MOBILE Wi-Fi PROBLEMS?

I have had the iPhone 5 from T-Mobile for almost a month now and still can't get WI-FI at home. I entered the wrong password the initial first two tries and after that I had remembered the password and will now always say "Unable to connect". I have tried turning it off and on as well as the router but no luck. Took it to T-Mobile and the re-booted the network but still no luck. What should I do now? Ask for a new iPhone 5?

This is a known issue with iPhone 5 and something that dates back to late-2012. Getting a new iPhone 5 won't solve the problem. However you could try clearing the Safari cache/cookies and also updating the iPhone's firmware -- as well as your router's firmware -- This fixed most of the Wi-Fi connectivity issues I had with my iPhone 5 with iOS6

Basically, update your router/phone firmware, reboot your router (then your iPhone) and then try connecting. Insure that you also have proper security on your Wi-Fi.

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