How to use the SMS call forwarding service of Guangdong Unicom?

Guangdong Unicom users can use SMS to transfer calls as follows: 1, only point-to-point SMS can be transferred, and non-point SMS cannot be transferred; 2. The short message received through the call forwarding number shows the number of the original sender; 3. SMS call forwarding cannot be set twice, and only one call forwarding can be supported; 4. In order to avoid circulation, when you turn on SMS call forwarding, set SMS call forwarding to mobile phone B. If user B sends you a message, SMS housekeeper will not forward SMS call to number B:5. When you have opened two services: SMS butler service and SMS message leaving service, you can use them at the same time. As long as the SMS butler service is opened, the SMS butler can receive messages sent directly to himself or messages forwarded by incoming calls. 6. When you open SMS, emoticon or emoticon MMS service at the same time, you can receive emoticon SMS by dialing the forward number, but you can't receive emoticon MMS (the message you receive is still a normal SMS). Emoji MMS and Emoji SMS are mutually exclusive and cannot be used at the same time. Other services can be used simultaneously.