At any time you may remove VT Mobile Trading System from your BlackBerry in the same way you would remove any other application installed on your device.
If you are not familiar with this process, follow the steps featured below:
Access Options located in your BlackBerry home screen (icon is highlighted with blue circle in the image below)
Locate Applications from the available list and enter it by pressing the track wheel

Scroll to the VT Mobile Trader application link
Press the track wheel and choose Delete function from the side menu
This method will completely remove VT Mobile Trading System from your BlackBerry.
