the ringtone of iphone can only support m4r format.

Apple's mobile phone (iPhone) is a series of smart phones developed by Apple in the United States, which is equipped with the iOS operating system developed by Apple. Jobs revealed the launch of the first generation iPhone at the Apple Global Software Developers Annual Conference 27 at the Masconi Convention and Exhibition Center in San Francisco.

Apple Inc is a high-tech company in the United States. Founded by Steve Jobs, stephen wozniak, Ron Wayne and others on April 1, 1976, it was named Apple Computer Inc of the United States. On January 9, 27, it was renamed Apple, and its headquarters was in Cupertino, California. The main products are tablet computers, smart phones, smart watches and computers.