What is the SMS listening service like?

SMS listening is a voice message SMS service. Users do not need to register. By dialing 10158, they can leave a message (within 30 seconds in length) to the called party. The calling user number directly calls the called user or sends a text message to the called user. The called user answers 10158 to listen to the voice message. The system displays the calling user's number when making the call. (The above content is only applicable to Guangdong Unicom users)