iPhone 4s greyed out wifi
Hello, the Wi-Fi of my iPhone 4S is not working. When iOS 5.1.1 was installed, it worked for 1 month without any problems. Then it began to not work. After updating to iOS 6.0.1, it's completely greyed out: I can't even switch it on, and the weird part is that it's working after putting it in the freezer for 3-4 minutes. I'm preparing myself to repair it. I want to know which part should i replace? The Wi-Fi antenna flex cable or the schema at the top of iPhone next to the camera?
Is this a good question?