1. First, you can open the application mall that comes with your mobile phone and enter the mall management page. On the page, you can see "application uninstall" and "space cleaning".

2. Click "Clean up the space" to enter the page of cleaning up the mobile phone space. Through the space cleaning function, you can clean up the cache garbage, advertising garbage, temporary files, log files, useless installation packages and so on. After clearing the space, try QQ again, which should solve the problem.

3. If it still can't be opened, click "Application Uninstall" to enter the uninstall page of installed applications on the mobile phone, and uninstall some relatively large and rarely used applications on the page. After uninstalling, it should be able to solve the problem that qq can't be opened and the display memory is insufficient.

4. You can also enter the mobile phone file management page, where you can see all the files in the mobile phone and have the function of "space cleaning".

5. At this time, you can click to enter the folder of videos, pictures, music, documents, installation packages and compressed packages, delete videos, pictures, music, documents, installation packages and compressed packages in the mobile phone, increase the memory of the mobile phone, and also solve the problem of insufficient memory of the mobile phone.

6. After entering the folder, click Edit in the upper right corner, select videos, pictures, music, documents, installation packages and compressed packages that can be deleted, and then click Delete to increase the memory of the mobile phone.

7. Then you can click "Space Cleaning" in file management to enter the space cleaning page, where you can see "Garbage Cleaning", "WeChat Cleaning", "QQ Cleaning" and "Photo Cleaning".

8. You can click "Garbage Cleaning" to clean up the cache garbage, advertising garbage, temporary files, log files and useless installation packages in your mobile phone. After cleaning, the memory of the mobile phone will increase.

9. Next, you can click on "WeChat Cleanup" and "QQ Cleanup". On the page, you can clean up files cached by WeChat and QQ, old files and received files, which will increase the memory of the mobile phone.

10. Finally, you can clean up the photos, clean up some repeated similar photos and slim down the video to increase the memory of the mobile phone, thus solving the problem that the mobile phone qq can't be opened and the display memory is insufficient.

Heart of the King 2 Click on the demo.