Most modern phones allow you to assign specific ringtones to each contact. Check your phone's ringtone settings to customize these assignments. Make sure to download from trusted and secure sources to avoid security issues. The sources mentioned in this article are reputable and secure. Go to your phone's ringtone settings, select the ringtone you want to change, then choose the new ringtone you downloaded. Some sources offer specific ringtones based on movies, series or video games. Customize your alerts based on your interests.