There is no sound when the mobile phone receives the text message. Why?

1. SMS ringtone is generally set to "None". You can go to Settings-Sounds-SMS Ringtones-and choose a ringtone as the SMS ringtone.

2. The mute mode of the mobile phone is turned on, resulting in no sound in the received SMS. Generally, mute mode can be turned off; You can turn the mute mode on or off by dialing the mute button on the side frame of the mobile phone.

3. If there is a problem with the mobile phone system and there is no sound after receiving the text message, you can go to Settings-Restore-Restore all settings to solve it; If necessary, consider upgrading the system to the latest version, or connecting the computer's iTunes software to automatically restore the system.

4. If the above methods can't be solved, there may be something wrong with the hardware of the mobile phone. You can contact Apple after-sales maintenance to solve the mobile phone.