That happend to me after uptode ios 5 to ios 6.You can't turn on/off your wi-fi button.I reset all settings,network settings,erase all iPhone but nothing.That are two methods to fix it but is just for 10 minutes(freeze method,hair dryer).Please help me to fix that problem.
iPhone 4S, iOS 6
Not working for me another method
Same problem, some days stays well for 10 to 12 hours but ater that and with no reason it becomes greyed out again!!
I've tried every thing and still nothing!!!
I just hope to te a software issue... I've no warranty :(
Update on grayed out wifi button in 4S:
I tried all the fixes and although some work unfortunately they turned out to be temporary. When I retry them none work for me. I did purchase the AppleCare plan so I arranged to send in the old phone in exchange for another 4S.
I chose to take the old phone to UPS store & when Apple received it, they overnight mailed the replacement to me.
Very short down time this method. Of course you have to go through setting up the replacement phone which I did with Apple tech walking me through it.
I highly recommend taking out Apple care insurance plan when ever you buy an Apple product, it is well worth it. No hassle dealing with them except for the time factor!
Some folks think the problem is due to poor solder connections of the WiFi chip on the card. Heating may expand the joints to cause temporary connectivity. The chip itself could be of low tolerance, and the iOS update causes it to fail the threshold. If you have tried the software resets, then the cure is to reflow the solder of the chip to the WiFi card, or to replace the WiFi card. Apple will not "own" this problem, even though it seems to be widespread. Apple offers to renew your contract for a new iPhone at $199. Certain repair shops will tackle this problem, although many local shops will not. In the US try iFix Miami Beach. See them on eBay <http://www.ebay.com/itm/iPhone-4S-Grayed-Out-Wifi-Wireless-Fix-Repair-Service-Tr usted-Specialists-/161160765436?ssPageName=ADME:L:OU:US:1120> for a $69 fix. They fixed my iPhone 4S and returned within a week (even over the Memorial Day holiday weekend). In Europe, I have read about, but have not tried PodMod <http://www.podmod.org>
iPhone 4S Wi-Fi greyed out
