Originally Posted by jlpierce
Just a quick possibility, go into the Settings -> Applications -> Development and then check the box for USB Debugging. That should stop the unit from being recognized.
Just a thought.
USB Debugging is ADB (Android Debug Bridge), which has NOTHING to do with tethering.
OP: Disable tethering on your phone;
System Settings --> Wireless & Networks (or "More" on Android 4+) --> Tethering --> Uncheck "USB Tethering". If this process doesn't work, it would indicate that your phone has crippleware on it rather than a more standard Android distro, in which case you should consider installing a custom built AOSP system image on it for a FAR better experience.