Mobile phone as long as you do not delete will always be retained, but the computer needs to be set up to be retained all the time, the steps are as follows:

1, first of all, in the computer to find the WeChat icon, click on the open login can be.

2, and then enter the interface of WeChat, find the bottom left corner of the three horizontal logo, click on it.

3, and then a new interface, find the bottom of the settings option, click on it.

4, click Settings to enter the new interface, find the General Settings option to click, and then there is an option to retain the chat history, check the box to retain the chat history of the computer version of WeChat for a long time.