A:AnswerYes, while the previous model QuietComfort 20i was discontinued in 2015, the currently listed QuietComfort 20 Noise Cancelling Earbuds (iOS) are compatible with Apple iOS devices.
A:AnswerNo. The airplane “iPad” typically does not charge any device. You have to plug the headphones into a power source. Many planes have a plug to charge a device such as these headphones near the floor in between seats.
A:AnswerIt’s unaffected- just as loud as if you weren’t using them. This is somewhat of a problem, since it sounds quiet to me, I’m sometimes accidentally staying in a place that’s noisy for the person who is trying to hear me.