Fortune-telling Ball description

The Magic 8 Ball is a toy used for fortune-telling or seeking advice.
To use the ball, your phone or pad must be held with the window initially facing down. After "asking the ball" a yes-no question, the user then turns the phone so that the window faces him, setting in motion the liquid and die inside. When the die floats to the top and one of its faces is pressed against the window, the raised letters displace the blue liquid to reveal the message as white letters on a blue background. Although many users shake the ball before turning it upright, the instructions warn against doing so because it can lead to bubbles.