Q：The other party cannot hear the sound during the call.
A：We apologize for the inconvenience. Please try the following steps:
1. Please check that the call volume on your device is adjusted to a suitable level.
2. Please test the device's recorder function and listen to the recorded audio file. If the recorded audio file plays sound, it may be that one party's signal is too weak; please check the signal strength.
3. If the recorded file plays without sound or has static, it may be a microphone malfunction and needs to be repaired.
