The world's largest smartphone assembly plant produces nearly 150,000 smartphones a day. Factories specialize in individual components, like cameras, chips, and phone cases, which are designed to fit perfectly together like a puzzle. From sourcing and mining rare earth metals to testing software and hardware, making smartphones is an international affair. This exploration volume describes the process from start to finish and introduces readers to essential social studies concepts like trade and globalization. It clearly demonstrates how these concepts power the science and technology that changes our world.