Durable steel mobile phone storage box designed to protect and organize up to 36 phones. Built for long term use and easy access, it combines solid construction with thoughtful features for workplaces, schools, and public venues. Key benefits Robust protection: Outer shell made from selected steel with pearl cotton and EVA lining inside to cushion devices. Wear resistant, impact resistant, and designed to resist deformation and aging with prolonged use. Large capacity and compatibility: Holds 36 mobile phones. Each compartment is sized to fit 99 percent of mobile phones on the market, accommodating a wide range of models and sizes. Secure and visible: Equipped with a secure lock and two keys. A transparent front panel keeps devices visible while locked. A digital label on the front makes identification and management simple. Flexible installation: Back panel includes wall mounting holes and expansion screws for easy wall installation. Can also be placed freestanding to maximize space use and keep devices organized. Specifications and performance Materials: selected steel exterior, pearl cotton and EVA interior for shock absorption and scratch protection. Capacity: 36 compartments, each sized for most current mobile phones. Security: mechanical lock with two keys and transparent front plate for visual checks. Installation: supports wall mount with supplied expansion screws or independent placement. Practical use scenarios Meeting rooms and training centers: Collect and store attendee phones during presentations or workshops to reduce distractions and keep devices safe. Restaurants and retail checkouts: Provide a secure place for customer or staff devices during service or shift changes. Classrooms and office reception areas: Organize multiple devices in one location for inventory, charging station support, or temporary storage. This storage box offers a practical, reliable solution for organizing and protecting multiple mobile phones while keeping them accessible and easy to manage.