Qt+serialport+android?

Question

Android

Good day. There was a need to connect the controller with the Android device (root is).
QSerialPortInfo::availablePorts()
returns 3 ports: ttyHS0, ttyHSL0, ttyHSL1
Previously, we managed to connect Arduino, the ttyCOM0 port appeared, as far as I remember. But then the port could not be opened.
I tried on another phone (also rooted), on another arduino and on stm32, but to no avail. QextSerialPort also does not find the port. How can I do better?