Why can't WeChat change its pure white avatar?

If WeChat uses a white avatar, it will be copied with its white background, so you can't see your avatar, that is, you can't use a white avatar. If not, network problem: because the network is slow, the picture can't be updated. Solution: It is recommended to change the network environment and try again later. 2. Picture problem: The picture is too large and beyond the acceptable range, which leads to the failure of uploading. Solution: Replace the picture again, or use retouching software to narrow the picture to the corresponding range before uploading.