Hi all! I've searched but either a) nobody has posted about this or b) I'm not using the right keywords. Anyways, over the last week I've had some strange issues with my s4. I'll be using it and if there is music playing, there will be a "pop" from the device, not like a notification sound, more of a 'physical' pop. Immediately after I lose sound output, the phone will freeze and then switch off within ten or so seconds. Afterwards the phone won't turn on unless connected to the charger. This happens anywhere below %40 battery and there is no low battery warning beforehand. It happens most often when playing The Simpsons Tapped Out but does occur pretty much whenever it wants. The phone is in great condition, never been exposed to water or extreme temperature and I'm really quite irritated... Anyone else had this problem or know of a fix? If not, am I better off going to my service provider or straight to Samsung? Thanks guys!