Because 19. The maintenance starts from the evening of 17, and cannot be modified during the period, such as QQ, personal WeChat or official WeChat account name, personalized signature (introduction of official WeChat account function), avatar, etc. It is suggested that you modify it on129/0.

The specific steps for WeChat to change the avatar:

1. Open the main page of WeChat.

2. Click on the icon in the upper right corner of the page, and then click on your WeChat avatar.

3. In the page that opens, click the word "avatar" (you can't click the avatar on the right, that's to view the avatar. Many people order this, so there is always no button to change the avatar.

4. At this time, a page pops up, where you can take a photo or load your favorite picture from your mobile phone album as your avatar, and then select Edit.