Keyestudio Micro:bit Mini Smart Robot Car V2 Instructions Manual page 146

Using Bluetooth APP:
Send the above source code to the micro:bit main board; then power on the micro:bit main board
Click the link to download the Bluetooth APP:
https://drive.google.com/open?id=1u_wXlpuRjcChpCcVPcIha4yWYWhefhW2
Installed well the Bluetooth APP, click the icon to open the APP.
Once your phone detects Bluetooth module on micro:bit main board, the APP will
prompt to open the Bluetooth. Choose to open the Bluetooth.
Pop up the interface below:
120