回答“wifi button greyed out on ipad air after update”I have a iPad Air 2 and same thing happened. I went into the genius bar and they refused to replace or fix the issue because it was out of warranty. They also suggested me to trade-in the iPad for a new one plus pay a couple hundred bucks! ( wtf? ) My iPad Air 2 64gb worked flawlessly before the updating to 9.3.5.