The smartphone version is Android 9 and the Magic UI version is 2.1.0 .

First of all, thank you for your answer. After I enter the ST BLE Sensor, click Create a new App, there is a Human Activity recognition, I can edit it (including setting the sampling rate), but after clicking PLAY It will show the situation like the ...

First of all, thank you for your answer. After I enter the ST BLE Sensor, click Create a new App, there is a Human Activity recognition, I can edit it (including setting the sampling rate), but after clicking PLAY It will show the situation like the ...