About AMR audio file playing issue on different devices

Question

I have got a quite strange problem here. I am developing an IM software and need to play audio files recorded by another client on Android. The same audio file I\'ve got can

Answer 1

I've solved the issue.

Over iOS4.3 or later, the AMR format is no longer supported. If you want to play or record one, you have to use some other tools(which I use opencore-amr library) to transform the format.