To improve health and get rid of sub-health state, we need to start from bit by bit in daily life. Letong recognizes and advocates a healthy lifestyle, and interacts with real data and fun to make change no longer difficult. Automatic recording, easy to use. As long as you carry your mobile phone with you, Le Tong can automatically record the whole day's exercise. There are no complicated operations, and you don't have to worry about forgetting! Personalized goal suggestion Personalized goal suggestion algorithm, aiming at each user's personal situation, recommends the daily moving target and the recording function that is most in line with China's national conditions, and estimates the daily PM2.5 inhalation for users according to the daily moving state and position. Cherish life and be careful of smog! Friend interaction Add friends from WeChat and Weibo, and compete with friends for daily sports results, and move towards a healthy life together. Based on personal data and exercise details, calorie calculation is an excellent partner for weight loss and shaping. The track of life is clear at a glance. Music power not only records the movement, but also automatically records the track of daily life. Intelligent Power Saving Intelligent heartbeat power saving mechanism, when the phone is silent, it automatically goes to sleep, saving electricity and traffic. The compatibility list supports mainstream models such as Samsung, Xiaomi, OPPO, ZTE, Huawei and Apple. Due to the reasons of mobile phone manufacturers, some mobile phones do not support background step counting, including Redmi.