Why does texting a friend through E-mail show a nickname instead of a mobile phone number?

1, at a certain time interval (24 hours), the same sender A sends a short message to the receiver B, and only the customer nickname+customer mobile phone number is reserved in the prefix of the first short message; 2. Clients A and B have exchanged more than three short messages with each other, and we think that they are completely familiar with each other, so when sender A sends short messages to the same receiver B in the future. SMS prefix only keeps the customer's nickname, and there is no time limit. Guizhou users pay attention to China Telecom. WeChat official account, Guizhou customer service, you can pay by WeChat, check the phone bill with one click, and you can operate the flow, points, bills and details yourself, which is convenient and fast. Customer service 39 answers for you.