If the file is a harmless system asset that keeps reappearing, you can place a blank file named .nomedia in the folder where it resides. This tells Android's media scanner to ignore that folder, preventing the file from showing up in your music player.
Most media players report the file as "unsupported" or "corrupted" when an attempt is made to play it.
In many cases, unexpected MP3 files in storage are actually from apps or games. If an app uses an "Events I/O" (evt-io) framework for installations or updates, it might download temporary audio cues or instructional files that get indexed by the phone’s media scanner as standard MP3s. How to Handle "evt-io-installation.mp3" evt-io-installation.mp3
It often appears in sequences, such as evt-io-installation(1).mp3 or evt-io-installation(2).mp3 , as if the system is attempting multiple downloads.
If you find this file on your device and it concerns you, there are several steps you can take to manage or remove it: If the file is a harmless system asset
Reports from the Google Files Help community describe "evt-io-installation.mp3" as a file that often appears on Android smartphones, specifically Samsung models, but is notably absent from Apple devices. Key characteristics reported by users include:
Even after deletion, the file frequently reappears in the user's storage without manual intervention. Is it Malware or a System File? In many cases, unexpected MP3 files in storage
Review which apps have "Storage" or "Install Unknown Apps" permissions. If the file appears after installing a specific app, that app is the likely source.
Tools like Checkmate MP3 Checker can verify if the file is a legitimate audio container or just data disguised with an .mp3 extension.
Use a trusted mobile security app to ensure the file isn't tied to a malicious background process.