In Samsung Galaxy S3, Vlingo Voice Command (from SGS2) has been replaced by an application called "S Voice". Like its predecessor it is, by default, launched whenever you double-press the Home button.
Luckily, it's a lot easier to disable the shortcut than it was on the SGS2. You don't even have to remove the app from your phone.
Here's how to stop S Voice from starting whenever you double-press the Home button.
- Launch the S Voice application.
- Go to settings.
- Disable/uncheck the "Launch S Voice" option in the settings menu.