WiFi no longer able to even see wireless networks

At some point (I believe after installing an update) my iPhone is no longer able to find any wireless networks. It will just continue to "spin" on the choose a network screen and never finds any. Trust me when I say the wireless access point is working and isn't the problem. I used to be able to connect to it and haven't changed anything. Plus there are other iPhone and iTouch users in my house that use it without a problem as well.
Here are the things I've tried:
1. Switch to airplane mode then switch back
2. Reset Network Settings in the general\reset menu
3. Upgrade to the latest and greatest iphone OS
4. Finally, I did a reset to factory defaults losing all of my apps and settings. THIS WORKED until I did a restore of my backup to get my apps and data back.
Is there any way to get this working again without losing everything and starting over?

This is a user to user help forum only.
Copied from my previous post.
If no change after resetting network settings on your iPhone and/or after restoring your iPhone with iTunes as a new iPhone or not from your iPhone's backup, your iPhone has a hardware problem with the wireless card or with something else. The iPhone includes a one year warranty.
Apple's solution if no change after what was copied from my previous post is an exchange under warranty since your iPhone has a hardware problem. With a hardware problem the only solution is an exchange under warranty. If there is no Apple store nearby, you can call AppleCare. If you have purchased the AppleCare extended warranty, the exchange will be shipped to your door the next business day after calling. If you haven't purchased the AppleCare extended warranty, if you pay $29 the exchange will be shipped to your door the next business day after calling. You must give AppleCare a credit card in case you don't return your existing iPhone within 10 days after the exchange under warranty is received. You use the same box to return your existing iPhone with the return shipping label located below the shipping label to you. AppleCare includes tape to reseal the box and a small paperclip to remove the SIM card from your existing iPhone. The phone number for the shipping carrier is included in the box. When the box is ready to be picked up to return your existing iPhone to Apple, you call the carrier.

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