The main difference between MP3 and MP4 files is that MP3 files only include audio, whereas MP4 is a multimedia file type that can be used for audio, video, text and images. MP4 files are more compatible with modern technology and allow better storage optimization on devices.
The MP3 file was designed by engineers in Europe and revolutionized the way people listened to music. After developing advanced personalized multimedia devices, Apple decided to create the MP4 for easy playback of all file types across iPods, iPhones and iPads. It has been said that Apple popularized the use of MP$ files. One of the biggest advantages of the MP4 file format is its ability to stream over the Internet without users having to download it permanently to their device.