1, the Bluetooth headset itself will not deduct any costs, as long as the Bluetooth headset is their own.
2, the Bluetooth headset is only a communication device of the mobile phone, and the sound of the mobile phone will come out through it after the successful connection, calling, listening to music and other matters.
3, not because the use of Bluetooth headphones to listen to music will deduct the phone charge, the charge is related to the business handled by the mobile phone itself, and the Bluetooth headset is nothing to do with.
4. When using Bluetooth headset for the first time, it is recommended to use it correctly according to the instructions above.