Android phone: When the version of Android system is above 6.0, you can use the health APP with the bracelet for normal use.
Apple mobile phone: iOS 10 and above iPhone, and has purchased OPPO bracelet, you can download the "Huantai Health" APP from the APPstore. After matching the bracelet, please be sure to open the "Management" tab of the APP > "More"-"Device Update" to upgrade the bracelet system to the latest version.