Before setting a downloaded tonos para celular as your default, listen to it on your phone. This ensures that the file is playable and sounds as expected.
If you’re setting a downloaded ringtone as your default, use your phone’s settings menu for ringtones rather than a third-party app. This helps ensure seamless integration with your device’s system.
If you’re using Android, consider using a customization app like Ringtone Maker, which not only allows you to download ringtones but also provides tools to create your own custom tones.