1 and Xiaomi 4 phones run MIUI system by default, and there is no built-in fitness time management software, which is the setting of MIUI system; If users need to use this kind of software, they can enter the APP store to search, download and install fitness apps. After installation, they can open them and use them.

2.MIUI (Mi You) is a ROM developed by Xiaomi Technology based on Android operating system, which is designed for China people to improve their native experience in an all-round way, and can bring more intimate Android smartphone experience to domestic users. In the five years since the release of MIUI, the R&D team has reached 750 people, and 249 versions are released every week, with 65,438+500 million active users, covering 156 countries and regions and 32 languages.