First, you need to unbind the mobile phone number from the WeChat bound with the mobile phone number, and then exchange the bound mobile phone number.

The specific steps are as follows:

1. When we change our mobile phone number and log in to WeChat again, the screen will appear as shown in the following figure. If you change your mobile phone number, you should choose "My mobile phone is not with me".

2、

When "I don't have my mobile phone" is selected, the interface will be displayed as follows. We click "Next".

3、

Then there will be a box for you to enter your account password. Here Xiang Xiao reminds everyone to enter their own micro-signal binding account, such as QQ number, email address and mobile phone number (the original micro-signal binding mobile phone number).

4、

Select "Please select the problem you are experiencing". Generally speaking, we change our mobile phone number and choose "I change my mobile phone number".

5. Then enter the last four digits of your original mobile phone number in the box and click "Next".

6、

Choose a WeChat friend you trust.

7、

After choosing, call your chosen WeChat friend and ask him/her to send you a six-digit WeChat. We can select "View Progress" to view the related progress.

8、

If a friend doesn't answer the phone under unexpected circumstances, we can click "Contact other friends" and repeat steps 6 and 7.