The lock screen shall include instructional text to guide the user through the process of unlocking the screen. This text may be always present on the lock screen. Alternately, it may be introduced to screen only after a failed attempt to unlock the screen or during an initial number of successful unlock actions, after which it is removed. This requirement applies to the mechanism for unlocking the device, the mechanism for accessing the emergency dialer, and any quick-launch functions provided (e.g. quick access to the camera).