What if Alamaqi c3 children's watch has a low sound?

1. After the call is connected, please adjust the volume of your watch and press 1 to increase the volume of the call. Talking too far away from the microphone hole of the watch may also cause the phone to hear no sound.

2. Excluding the above, you may still not hear the sound. After hanging up, dial it again once or twice, and the fault remains. Maybe the microphone of the watch is broken, so it should be returned to the factory for repair.