1, open the mobile browser.
2. Enter the picture of the surname you want to set in the input box, for example, search for "Li's picture".
3. Select the desired picture, press and hold the screen, and then click Save.
4. Open the mobile phone WeChat and click "I" on the lower right.
5. Click on the name of WeChat.
6. Click on the avatar to enter the photo album interface. Find the picture and click on the top right corner to change the avatar.