Android Debug Bridge (adb) device - no permissions [duplicate]

Answer 1

On THL W100 running the device as root (as described above) worked only together with tethering enabled (I used AirDroid for that).

Answer 2

I encountered the same problem today.

I followed the official instructions, but I didn't noticed that I SHOULD run command
"chmod a+r /etc/udev/rules.d/51-android.rules"

After I set this file to world readable and re-plug my usb cable，the status became unauthorized. Then just grant the permission and everything goes fine.