Vaultz® Cell Phone Storage SolutionThe Best in Class Cell Phone Storage for Classroom Phone Management Cell Phone Storage helps schools manage devices during class, especially as more than 30 states propose or enforce inclass phone restrictions, and that number continually increases. The Vaultz Cell Phone Locker provides a simple, secure, and scalable way to keep devices out of sight and out of mind and is engineered for maximum security and durability. Why Educators Choose the Vaultz