Updated the phone. The tethering used to work on 3G, and 4G. It only works on WiFi now. When I connect a USB cable from my Notebook, it disconnects from 4G, or 3G (whichever mode that I have it on), immediately tries to reconnect, but gets this error: Data Call Failure Error Code 67.Registration failure. Your PCS Vision username and/or password may be incorrect. Please try again. This is with the HTC USB default tethering. It's the same result with Easy Tether. Is anyone else having this problem? If not, does anyone know what may be causing this? I have Reset the phone to Factory Default with the same result.