2.MIUI9 has improved the startup speed of the application, leading in the startup speed comparison of popular applications of iResearch TOP50. Adopt dynamic resource allocation mechanism, and give priority to the applications currently in use. During the test, MIUI9 simulates the daily comprehensive use behavior of users and continues to use it. 2017165438+1October 15, MIUI9 stable version now supports 18 Xiaomi mobile phone upgrade.