How to notify friends of mobile phone number change on WeChat?

1: After you bind to WeChat through your mobile phone number, you can use WeChat to send a notification of adding you as a friend to all friends in all address books for free.

2. Use the WeChat friends added in your previous mobile phone account. Of course, the other party shows your previous mobile phone number. Your previous mobile phone number is not bound to your mobile phone as a WeChat friend, so the other party is still a WeChat friend who displays the mobile phone number.

3: Send a group to WeChat friends.

1) Open the WeChat phone book, enter the home page, and click the SMS button in the lower right corner.

2) Then click the gear in the upper right corner, jump to the settings page, and click the account information item.

3) Select the dial-up notification assistant, enter a new mobile phone number, and then click Next.

4) Click the "Select All" button in the upper right corner, and then proceed to the next step. The system will edit the content of the message and click Send. (