Is there any sound in the silent SMS of Android phone?

The phone is mute, and all messages, or messages pushed by apo, are mute.

The phone is set to mute. I don't know when it has been set to mute. The advantage is that you can concentrate on what you are doing without being disturbed, because there are indeed too many harassing calls coming in at the moment, and what you have been concentrating on will be ruthlessly interrupted.

Also, as a trainer, sometimes a class lasts all day, and the phone can't be answered, so it's better to set it to mute.