Sms - Whistle ringtone can be downloaded to any mobile device. Supported formats are m4r and mp3. Sms - Whistle music can be used as a mobile phone call. Before you decide on downloading Sms - Whistle song for a call of your phone, you can listen to the selected Sms - Whistle melody first, and in case you like it, you can get it to Android or iPhone for free and without signing in at once.