Did Unicom get the card when reminding the owner to open the call butler service?

1. When you make a call, you will be prompted to call the butler service reminder, indicating that the called number has opened the butler service.

2. "Call Manager" is a communication assistant service for reminding and managing missed calls. When the user's mobile phone is turned off, the phone will be transferred to the voice platform of the call manager, and the call manager system will pick up the user's phone and send a short message to remind the user of missed calls.