Smartphones integrate various sensors like accelerometers, gyroscopes, GPS, and cameras to enhance functionality and user interaction. These sensors enable features such as location tracking, motion detection, and augmented reality applications. For example, GPS enhances navigation and location-based services, while accelerometers are critical for screen orientation and activity tracking. This sensor integration allows for a seamless user experience, enabling apps to deliver personalized content, improve performance, and enhance overall device capabilities while supporting a wide range of applications across industries.