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Solution to iPhone 4S WiFi Greyed Out After Upgrade to iOS 7

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Published on Jan 9, 2014

WARNING: try this fix at your own risk. We are not responsible in any way if this method causes permanent damage to your iOS device.

Using a hair dryer and heating up your iPhone 4S until you get a temperature warning pop up saying "iPhone needs to cool down before your can use it.

Once this message appears, pop your iPhone into the fridge for 10 minutes to allow it to cool down. Once that's done—Wi-Fi should work again.

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