–When the use of privately owned earphones is prohibited inside the plane.
•The
•If the earphone tips do not correctly match the size and contours of your ears, excessive sound may escape, or you may sense insufficient bass sound, and the effect of the
•If the earphones’ microphone is covered with your hand or other object, feedback may be caused, resulting in a “howling” sound. In this case, remove your hand or other obstruction from the microphone.
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