Dial the other party's number, and a message with the other party's number and an advertisement will appear on the screen of the mobile phone. What is this function?

Mobile color printing is a kind of value-added service, which transmits additional information during the user's call. In the process of calling and called users, the system automatically pushes preset color information (mood, jokes, business information, etc.). ) to the other party's mobile phone, so that the other party can see the color information after the call, so as to achieve the purpose of showing personality, sharing feelings, transmitting business information and so on. Color printing can be divided into calling color printing and called color printing. Because you have a color printing, I will take you as an example. If you open the call color printing, when you call me, I will receive a message. The content of the short message is set by you in advance, such as jokes, mood phrases, riddles and so on. You can set whatever you like. When you call your other relatives and friends, they will also receive this message.