Android Question felUsbSerial Permission on reboot


Active Member
Licensed User
I am using a FTDI USB to serial device. It's working well with the felUsbSerial library. I have defined the device as per this post:

On Android 5 I am only asked for permission once. Even after rebooting it doesn't ask for permission again.

On Android 7 it asks for permission after each reboot.

Is there a way to stop it from asking permission again after a reboot on Android 7?

This is for an unattended solution so it asking for permission again makes it unusable.


Staff member
Licensed User
The behavior is not related to the Android version. On some devices the USB implementation is not proper. Assuming that you defined the xml file correctly then there is nothing else that you can do. Try it with a different device.