A:AnswerI live in a dry, dusty desert and take these out running regularly. They have handled dust storms and just regular days in the Sonoran Desert. So yes, definitely dust proof.
A:AnswerYes, AppleCare+ for headphones is offered for this model. It should appear as an option on the product page, cart and even post purchase in order details.
A:AnswerI have the same issue with a Galaxy note s 10+ and an iphone XS. Mine have been in for repair 3 times. The issues continue. Return them if you can. Apple will not help you.
A:AnswerI have 3 windows computers, one of them a macbook pro with bootcamp. These do not work in Windows on any of my machines. They pair but never connect.
A:AnswerIt depends on your surroundings and where the phone is in relation to the earphones. I've used them as far as 30 feet away with no obstructions and I've had them disconnect while the phone was in my pocket on the other side of my body. The problem is, I have found that they often won't reconnect automatically when this happens.