Cathy Mulzer, a scientist specializing in the chemistry behind technology, takes us on a fascinating journey into the world of smartphones. She highlights how chemists, not just entrepreneurs, are the unsung heroes behind our devices. From vibrant displays to efficient batteries, she reveals the crucial role of chemistry in every component. Mulzer also discusses the complexities of circuit design and the challenges of advancing to 5G technology, emphasizing how chemistry will shape the future of communication and health monitoring.