You can set your phone number through a personalized signature to let others know. The software version demonstrated below is: 8.0.28. I'll share the method.

The operation process is as follows:

1. Open the WeChat software on your mobile phone, first click on me in the lower right corner, and then click on the personal information box at the top.

2. Then click on more information below to enter.

3. After entering, click on the personalized signature.

4. Then click on the blank space to enter the phone number.

5. After completing the input, click Save in the upper right corner.

After the setting is successful, you can see your phone number on the personalized signature, and others can know it.