No Mobile Phones Allowed Sign - Prohibition Symbol for Quiet Zones #3334671 (License: Personal Use)

The image displays a classic prohibition symbol: a red circle with a diagonal slash overlaying a black silhouette of an older-style mobile phone with a physical keypad and antenna. The high-contrast design ensures immediate recognition across cultures and age groups, emphasizing the restriction on device usage. It’s commonly used in environments requiring quiet or undivided attention.

Used in public spaces like libraries, hospitals, exam halls, theaters, and religious venues to enforce silence or prevent distractions; matches user intent for signage assets, safety compliance, or policy documentation.