(A) poor network environment
Check the network situation of the mobile phone. It may be because the current network speed is slow and the picture can't be loaded, so the avatar is not displayed. You can try to connect to the wireless wifi, disconnect the network, try to reconnect, or view the content of your circle of friends when the network is strong.
(B) Mobile phone memory is insufficient
It may be that there are too many software applications installed on the mobile phone, resulting in insufficient memory of the mobile phone. You can try to delete some unnecessary software applications to save the memory space of your mobile phone.
(3) The WeChat file is lost
Maybe you accidentally cleaned up some files that can't be deleted when cleaning up the WeChat cache or junk files. You can try to uninstall the original WeChat, search and download the new version of WeChat, and log in to WeChat again to check your circle of friends after installation.
(D) WeChat server problem
If you encounter problems with WeChat system updates or servers, you can only wait for WeChat to fix related problems.