When making or receiving a call using the headphones, your voice and other sounds are picked up from the headphone microphone Sidetone function. Your Voice, the surrounding sounds, and the sound of the headphone operation will be heard through the headphone ear pieces. This is not a malfunction.
- The volume level and sensitivity of the Sidetone function cannot be adjusted, and the function cannot be turned off.
- When using the headphone microphone, make sure that it is not too close to your mouth. If the microphone is too close, it may cause an echo or make your voice too loud.