HT4528 iPhone 4s' wifi doesn't work after upgrading to iOS 7

My Verizon iPhone 4s will not connect to wifi after upgrading to iOS 7. You would think Apple would have figured this problem out before releasing iOS 7 to the public. Any fixes?

After having trying everything out on the web, I found a fix that worked out. The thing to do is to deactivate your phone and then reactivate it. The way to do it is to first power off the phone. Then take out the SIM card. Then power on the phone and make an emergency call for about 5 sec. Turn the power off. Place the SIM card back into the phone. Power on the phone and plug it into the computer and to itune. Itune will then ask for your user name and password. The wifi will be working.
All you have to do then, is reinstall your saved restored file.
That's it !!

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