Hello, new to the forum.. Last night I charged my Galaxy S4 overnight as I always do and the phone turned off overnight somehow. This morning my alarm didn't go off and I checked my phone to see the time and the phone was completely turned off. I had to hold the Power button for 10 seconds for it to turn back on, and the phone was fully charged with the green battery indicator lit up. I was late for work because of this and this can't happen.. I only got the phone 3 weeks ago! Does anybody have any insight as to why this happened or how to stop it from happening in the future? I have Jellybean 4.2.2 and it is a brand new phone. My carrier is Telus in Canada.