WiFi is disable in iPhone 4s with iOS 7

I have the same problem! Also my battery percentage on the top right is missing.

The first day it worked fine. But last night i turned of wifi to save my battery. Ever since i Cannot turn wifi on. Nothing seems to fix it.

PLS help

If your wifi is greyed out do the following:

1) Put your phone on a plastic bag and then in the fridge (not the freezer!).

Wait around 20 minutes to take it out.

2) The moment you take it out reset your network settings.

When the phone turns on, your wifi wont be greyed out.

But...

The problem you might have is that it wont pick up any networks at all. Which is my case.

I had the same issue, stuck in a plastic bag in a freezer for 20mins or so, as soon as I took it out the wifi was no longer greyed out and I could find my home network. However this only seemed to last a couple of minutes...before the wifi symbol greyed out again

Foir my i can still se the Wifi MAC address, does this means my Wifi chip is ok and working. if that is the case that means the IOS 7 has bugs !!