Use a headset alone:
Take out only one headset or turn on only one headset
Use the two headphones separately:
Cancel TWS pairing: TWS pairing is successful. When the headset is not connected to the mobile phone, double-click the touch area of any headset. When both headsets are flashing alternately in red and blue at the same time, the TWS pairing is successfully canceled. After TWS is unpaired , The two headsets can be connected to two different mobile phones respectively (both Bluetooth names are displayed as F9)