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Cambiamenti ad How to Fix iPhone 4S Wi-Fi Grayed Out Introduzione

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Some device, iphone 4 and 4s, sometimes have the wifi botton "unclickable", the problem seems to be related to thermal shock. some user have fixed the problem simptsimply putting the phone in the refrigerator for 15 minutes.. others, have fixed putting the phone under a lamp for 30 minutes.
For a permanent solution we have to do a reflow on the wifi chip ''Murata SW SS1830010''.