Search for music on iTunes.
Search for music on iTunes.
To add a downloaded song to iTunes on an iPhone, follow these steps:
1. Open the iTunes app.
2. Tap the "+" icon or go to your library.
3. Select the downloaded file and choose "Add to Library."
4. If prompted, enter the song’s details (artist, album, etc.).
5. Confirm and the song will be available in your library.
Let me know if you need further help!