Smart devices are playing a pivotal role in transforming urban infrastructure into responsive, intelligent systems. In traffic management, AI-powered cameras and embedded road sensors monitor congestion and automatically adjust signal timings, significantly reducing commute times. Smart lighting systems adapt brightness based on pedestrian presence, saving energy while enhancing safety. Waste management has seen innovation through sensor-equipped bins that alert city services when full, optimizing collection routes. Another standout application is smart utility meters that provide real-time data on water and electricity usage, enabling more sustainable consumption patterns. These devices form an interconnected network that continuously analyzes and responds to urban dynamics. As 5G infrastructure expands, the responsiveness and integration of these systems will become even more sophisticated, resulting in cities that are cleaner, safer, and more efficient to live in.