Greyed out Wi-Fi on iPhone 4s?

Greyed out Wi-Fi on iPhone 4s?

Added (1). I recently updated my iPhone 4G (white) to ios8 thinking it would fix the problem I have with the Wi-Fi. Around 1 or 2 days ago the Wi-Fi icon greyed out and I couldn't turn it on, remember that this was on ios7, I've tried lots of things like putting it in the fridge for a while which did work but it was only temporary.

Try and take it to an Apple Store. There's a bug with the Wi-Fi on iOS 8 that is is constantly disconnecting just to let you know.

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