The first time I did this udev rules fix for Android ADB connection was around 2012. Today I had to do it again for my Kubuntu 23.10.

1. Enable developer mode

Go to Settings / About Device / Version and tap Build number 10 times.

Go to Settings / System Settings / Developer options and make sure USB debugging is turned on.

For some reason I wasn’t developer in my main device so I had to do this to make the device even visible into adb devices.

2. Plug the device in

After connecting the device and running adb devices I got following:

List of devices attached
c6342f8c        no permissions (missing udev rules? user is in the plugdev group); see []

This indicates that the udev rules are not properly set up.

3. Fix udev rules

Instead of trying to find the correct values from search engines just use lsusb. It should tell the vendor and product ID for your device.

Bus 001 Device 012: ID 2abc:4def OnePlus Technology ...

Open udev rules

sudo vim /etc/udev/rules.d/51-android.rules

and put the values from lsusb into it like this

SUBSYSTEM=="usb", ATTR{idVendor}=="2abc", ATTR{idProduct}=="4def", MODE="0666", GROUP="plugdev"

Remember to make sure your user is part of group plugdev.

Then reload the rules.

sudo udevadm control --reload-rules