No Mobile Phone Sign - Prohibition Symbol for Quiet or Restricted Zones #3457262 (License: Personal Use)

The image displays a standard prohibition sign: a bold red circle with a diagonal red slash overlaid on a black silhouette of an older-style mobile phone with an antenna and physical keypad. The design follows ISO 7010 safety signage conventions, ensuring high visibility and immediate recognition across cultures. It communicates a strict restriction on using mobile devices, often enforced in environments requiring silence, security, or electromagnetic interference control.

This image is typically used on signage in hospitals, libraries, classrooms, exam halls, religious venues, and secure facilities to indicate that mobile phone usage is forbidden. It matches user intent seeking visual guidance on compliance, policy enforcement, or accessibility standards.