To change your phone number on WeChat, you can follow these steps:
1. Open the WeChat app on your device.
2. Go to "Me" or "Profile" section.
3. Tap on "Settings" or the gear icon.
4. Select "Account Security" or "Security Center".
5. Choose "Phone Number" and then tap on "Change Phone Number".
6. Follow the on-screen instructions to verify your identity and update your phone number.
If you encounter any issues during the process, you can contact WeChat customer support for further assistance.
