Reason: The running memory and mobile phone storage of Xiaomi 1 1 need to be optimized, and the system and application take up too much forcibly. The method of clearing memory 1. Open the file management on Xiaomi's mobile phone first. As shown in the figure below.

2. Then click the cleaning option at the bottom. As shown in the figure below.

3. After the scanning is completed, you can directly click Clean up the garbage, as shown in the figure below.

4. You can also choose the special cleaning of WeChat and QQ, and click Clean Now, as shown in the figure below.

5. Finally, you can select the items to clean up and click to clean up.