It is located in critical system folders like C:\Windows or C:\Windows\System32 .
Deleting these files is perfectly safe. Because they are not vital system files, their removal will not harm your phone. However, the source app will likely recreate them if still installed.
You can block Android's media scanner from reading the directory by using a hidden command file.
Understanding and Removing "evt-io-installation.mp3" from Your Device
According to Google's official support channels, these files reside in /storage/emulated/0/Music/ , which is simply the path to your device's internal storage Music folder. /storage/emulated/0/ is Android's way of referring to the main internal storage partition.
| App Source Clues & How to Check | | :--- | | | | Think back: When did you first notice these files? Did you install any new apps around that time? Look for any audio processing tools, music-making apps, video editing apps, or developer tools. | | 2. Search for Audio Tool Apps | | Open your Settings app, go to "Apps" or "App Management," and browse your list. Look for apps with names like "EVT," "Easy Voice Toolkit," "Audio Toolkit," "Voice Changer," "Sound Studio," or any app you don't remember installing. | | 3. Check Your Downloads Folder | | Open your "Downloads" folder or a file manager app. Look for any installation packages (APK files) or zip files related to audio toolkits. This can be a strong indicator. | | 4. Use a Process of Elimination | | If you have an idea which app might be responsible, try a temporary test. Uninstall the suspected app, restart your phone, and see if the evt-io-installation.mp3 files reappear after a few days. |
As mentioned, it is suspected that this file is placed by unauthorized individuals to test if a user is monitoring their file system.
A third-party app—often related to file management, free games, or music tools—constantly regenerates this file, believing it needs it to function or to log something, note users on the Reddit AndroidHelp forum .