It’s okay to have your phone on airplane mode and a Bluetooth headset.
China Eastern Airlines and Hainan Airlines have announced the lifting of the ban on “in-flight mobile phone use”, which allows passengers to use PED (portable electronic devices) such as mobile phones, tablets, laptops and e-readers, but only if the devices are set to flight mode. But for cabin safety reasons.
Small PED devices such as mobile phones and e-books are not allowed to be connected to accessories such as headphones and charging cables during critical phases of flight such as taxiing, take-off, descent and landing.
That means you can listen to music with your Bluetooth headset when your phone is on airplane mode, except during the key stages of flight such as taxiing, take-off, descent and landing.
You can use Bluetooth headsets while flying, but there are limitations.
The use of electronic devices on the plane requires that they be set to airplane mode, and for the sake of flight safety, neither phones nor e-books can be connected to headphones while gliding, taking off, descending or landing.
The use of wireless communication devices during takeoff and landing will cause interference to the communication between the captain and the tower. Although the power of Bluetooth earphones is relatively small, in order to avoid risks, it is better not to listen to music with Bluetooth earphones.
But other than that, it’s possible to put your phone or player on airplane mode and listen to music through a wired or Bluetooth headset. There’s no danger.