A handset in a red circle with a diagonal bar, prohibiting phone use.
Also known as: No phones, Phone crossed out
A struck-through phone prohibits phone use. What it prohibits has drifted with the device: the sign was drawn for calls, and the same drawing is now used where any phone use is unwanted.
Prohibits the use of mobile telephones in the area it marks.
Contexts: Public information
Has drifted in meaning as devices changed. It was drawn to prohibit calls, and the same sign is now posted where silent use is also unwanted — so what exactly it forbids depends on the setting rather than the drawing.
Contexts: Public information
Is still drawn as a handset with an earpiece and mouthpiece in many signs, a shape no current phone has.
Contexts: Public information
A simplified mobile handset or telephone receiver inside a red annulus, crossed by a red diagonal bar.
Prohibition pictograms of the same construction.