How to hide your mobile phone number when sending messages to others?

Mobile phone-more in the upper right corner-Settings-More settings-Show local number-Hide number. Some machines: mobile phone-menu key (or three points in the upper right corner)-settings (call settings)-other settings-caller ID-hidden number. Add #3 1# before dialing the number (China Mobile only, Unicom code is unknown, and you can consult through customer service phone) so that your local number will not be displayed on the other party's mobile phone, telephone or PHS. I didn't go to the business hall to handle the business of hiding the calling number. I'm not sure about the process, but I don't think it's easy in general. Send text messages to hide numbers. Methods: Mobile users should add 02 1230 before their mobile phone numbers when sending messages to each other. If you are a Unicom user, add 998745 before the other party's mobile phone number when sending a text message. So that the other party can not know your mobile phone number.