What is the primary function of an MP3 player?

The primary function of an MP3 player is to store and play music. MP3 players are designed specifically for audio playback, allowing users to store digital music files and access them easily. They compress audio files using the MP3 format, which allows for efficient storage without sacrificing much sound quality. This makes it easy for users to carry large libraries of music in a portable device. While some MP3 players can perform additional functions—such as connecting to other devices or managing schedules—these are secondary features that do not define the core purpose of the device. The main focus is on providing a user-friendly experience for listening to music.