1. Check whether the Bluetooth headset has sufficient power, if the power is insufficient, please charge it in time
2. Check whether the audio source is mono, you can switch to other music to try.
3. If the audio source is ok, check if the phone is set to mono output
Inspection Method:
IOS system enters the settings --- auxiliary function, check whether the mono audio is turned on or the audio equalizer is biased to the left or right
Android system enters the settings --- barrier-free, check whether the mono audio is turned on or the audio equalizer is biased to the left or right
4. If none of the above functions are problematic, please delete the Bluetooth pairing connection between the mobile phone and the headset, and then pair and connect with the headset again. The specific operations are as follows:
Long press the headset touch button for 4 seconds to shut down
Delete the Bluetooth pairing connection of "P36" on the phone
Press and hold the headset touch button for 3 seconds to turn on
The phone is paired and connected with "P36" Bluetooth again