I'm Nokia Lumia 720 user. Have just updated my lumia with black update. The good news after I updated it was I could change message tone with custom song from my mp3 songs (of course after trimmed by Ringtone Maker Application). It had no problems when set as ringtone as the 40 seconds tone played really smooth. But it became problem when set as message tone, it would only play for 10 seconds although the trimmed time was 40 seconds. Is there any limitation for custom song set as message tone after black update? If there is any way to make the tone ring longer, please tell me....thank you (^_^)v