Brand model: iphone 13promax
System version: ios 15.6.0
Software version: WeChat 8.0.33
1, open WeChat
2. Click Discover
Step 3 open a circle of friends
4. Click on the background picture.
5. Click to change the cover page.
Step 6 choose the source of the photo
7. Select the photos you like, and then click Done.
So you can change it. Go and have a try!