Xiaomi's mobile phone message doesn't ring, and there is no prompt tone.

1. Enter the volume or sound effect settings and check whether the phone is set to the lowest volume. Include buttons for adjust that volume of the mobile phone and adjusting the volume to the maximum.

2. Restart the phone to see if there is any sound, mainly to check whether there is a problem with the compatibility of the phone system and hardware, resulting in volume failure.

3. Speakers are mainly used for playing sounds on mobile phones, such as ringing of incoming calls, receiving information prompts, listening to music, hands-free mode of mobile phone calls, key tones of mobile phones, etc.

4. Audio cable is one of the five cables of mobile phone, which is located on the side of mobile phone. Flip-top phones and slide-top phones often slide their phones, so the audio cable is likely to be damaged. However, unless the bar phone falls badly, the audio cable is hard to be damaged.

The receiver is mainly used to transmit sound to the ear when answering and making calls, so it should be exposed outside the receiver. There is a hole in the phone. Although there is a dust filter, if water, dust, drinks or grease enter the receiver, the receiver is easily damaged. We will have to send it to be repaired.