Hi folks, not sure if anybody has noticed but on many Galaxy s2's the pin lock screen is faulty. If you lock the screen using the pin code setting it locks fine, but if you double tap the Home button (that's the square button) it bypasses the code and goes straight to Vlingo voice command, from there you have a open phone. I have tested this on 3 SGS2's and it has worked. Note: this only works on the pin setting, not any of the other security options. My advice, don't use the pin code to secure your phone.