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Published on Jan 5, 2014
After upgrading my iPhone 4S to iOS 7.0.4, i noticed that the Wifi button had greyed out. This meant i could not connect to any Wifi network. Also, i noticed excessive battery consumption and slow response on the phone. I tried resetting the iphone and restoring using DFU mode, but to no avail. Came across this technique of heating the iphone with a hair blower worked like a charm. Please be advised, this is not a permanent cure. While the technique works, i had to already do this thrice in under 2 months..