Iphone 4S can't use Wi-Fi ever since the update?

When I updated to IOS 6.1.3. My apps that require internet connection will not load. The Wi-Fi symbol will be there, but nothing loads. If I turn my Wi-Fi off and then turn it back on it will work for a while then it won't. This has been happening ever since the update.

Is anyone else having this problem is it just me? How do I fix it?

Go to the store and see what's up with your iPhone. Apple sometimes doesn't have the best products.