No Mobile Phones Allowed Sign - Official Prohibition Symbol #1887230 (License: Personal Use)

This black-and-white regulatory sign features a smartphone icon crossed out by a diagonal line within a circle and square border, conforming to international safety signage conventions. The minimalist line-art design ensures high visibility and immediate recognition across languages and cultures. It’s commonly deployed in environments requiring silence, security, or distraction-free zones.

Used on walls, doors, or digital interfaces in hospitals, exam halls, theaters, government buildings, and secure labs to communicate phone restrictions. Matches user intent for compliance guidance, facility rules, or safety protocol documentation.