Universal phone icon with red strike-through delivers a clear message to discourage mobile phone use in restricted areas.Crisp black, red, and white color scheme ensures the sign stands out from a distance in offices, labs, or meeting rooms. Made from waterproof, UV-resistant material suitable for indoor or semi-outdoor use without peeling or fading. Perfect for hospitals, classrooms, exam halls, studios, and conference spaces where mobile use is disruptive or prohibited.