... Using wifi in airplane mode is a great way to save battery life or prevent calls while using wi-fi. I do this all the time. You can try it yourself (just turn on airplane mode, then turn on wifi) or read more from Apple: http://support.apple.com/kb/ht1355

It seems in worrying about wifi, you missed the point of the exhibits submitted, though. You can read the rest of those here: http://www.rezlaw.com/News-Events/06-30-14_Complaint_with_Ex...

On at least some Android phones, it's possible to turn wifi on normally after turning on airplane mode. I'm not sure, but I think that turning on airplane mode just sets all the radios to be off, it doesn't force them to stay off.