On this phone when headset is unplugged from the audio jack music should be paused by default, but in this case it continued to play for a second, through phone's speaker, then it paused as it should have. This happened only once. Could this be just a simple bug or problem might be more serious.
I know it's for the best to ask in the repair store, but I just need your opinion for now.
Read more: Audio problem on Samsung Galaxy?