Iphone4s upgrade ios7.0.4 WiFi is not available?

Problem

I'm just starting to use this WiFi before I started using this Wi-Fi in my home. The 6.0 system was always okay. Later friends said that upgrade can use FaceTime so upgraded. The system is significantly slow after the upgrade. Start It's not a problem for a few days. Suddenly one day the WiFi will not open. And then shut down and reboot. In the end. There are a lot of things to say about restoring a network. All the methods, including Apple's official methods, are not working. And then the occasional trip. Then the 7.0.4 system was recently developed. The system that upgrades to the 7.0.4 goes straight to the bottom. You can use it once in a while.

Solutions

First, you can try clicking Settings-General-Restore-Restore network settings.

Second, this problem many 4S users are reflected, personal advice you first look at the set about the local WiFi address is there, if not, I suggest you hurry to authorize a service provider or Apple Store detection bar, there may be a hardware problem