Phones are electronic devices used for voice communication and, increasingly, for a wide range of other functions. Originally designed to transmit sound over long distances using wired connections, phones have evolved significantly over time. Modern smartphones combine the functionality of traditional phones with features like internet access, cameras, GPS, and apps, making them essential tools in daily life. They allow people to communicate instantly through calls, texts, and video chats, and are widely used for work, entertainment, and social connection. Phones have transformed how people interact, work, and access information in the digital age.so it can damage our eyes if we see phone for long time