Hi. I am using Samsung i9300. I just found that the phone keep stay awake when I am listening to music. I remember that it was not happened when I am using 4.0.4. After I have upgraded to 4.1.1, the battery drain because of this. I even upgraded to leaked 4.1.2 but nothing changed. Here is the screenshots: I have made some searches. Someone said it is normal because the phone cannot play if it goes into sleep. But I think it is not working well. Does anyone have any suggestions?