A virtual Slide-to-Lock feature for communication devices running a PTT application. When the Slide-to-Lock feature is activated, a PTT locking function on the communication device is activated. As a result, messages on the communication device may be created, without the need of the user to continuously hold or select a Hold-to-Talk or similar PTT feature. In one non-exclusive embodiment, the virtual Slide-to-Lock feature is activated when a finger is moved from a first region to a second region on a touch-sensitive display screen and de-activated with the opposite motion.