No Mobile Phones Allowed Sign | Prohibited Device Symbol #3321626 (License: Personal Use)

The image features a black-and-white illustration of a traditional feature phone (with physical keypad and small screen), overlaid by a bold red prohibition circle with a diagonal slash. The design follows international signage conventions for banning devices, emphasizing clarity and immediate recognition. The transparent background allows flexible integration into digital or printed signage systems.

Used in educational institutions, healthcare settings, government buildings, and event venues to enforce device-free policies; matches user intent for finding prohibition symbols, signage templates, or safety compliance resources.