I have encountered this problem before about how to change the selection mode of mobile phone WeChat avatar, and it is quite easy to solve it. Next, I'll tell you how to operate:

Tools: Huawei P50, Android 5.0, WeChat 8.0.33.

Step 1: After logging in to WeChat, choose to open my main menu at the bottom. (as shown in the figure below)

Step 2, then find the avatar option at the top and click Open. (as shown in the figure below)

Step 3: After entering the personal information panel, click the avatar on the right. (as shown in the figure below)

Step 4: Then place a local picture, cut and edit the picture, select a suitable range, and click OK at the bottom, so that you can change the WeChat avatar after placing the picture. (as shown in the figure below)

The above is all the steps to solve how to change the selection mode of mobile phone WeChat avatar. Remember to like it for me if it is useful to you ~