Stock, non-rooted ATT Galaxy S3 about 10 months old. Was on JB 4.1.1 until last week. now 4.1.2. My issue is that the I will go to bed (or leave the phone for several hours) with the battery at fairly reasonable charge (> 60% for example), and wake up with a dead battery. Phone is off. Inmost cases, because I don't use my phone all that much, I have to recharge the battery every 2-3 days. I have had this issue for the last 3-4 months. It is very intermittent. It used to happen about once every 6-8 weeks. Now it is happening about 3-4 times a month. It is not related to the JB upgrade to 4.1.2. I am very conscientious of the apps and such that are running on my phone. Almost with out fail, I shut all apps down (holding the home button, and then clearing them all) after each use of the device. Yes, just about every time I use the phone. I use a total black home screen except for the clock (white). (no widgets at all on any part of the phone). Screen is on auto bright, and set pretty dim. I usually leave bluetooth and wifi on. There are no bluetooth connections available in my house, and my wireless router is 20 feet away and always on. You can see some screen shots of GSAM battery monitor here. These were taken a few minutes after I found the phone dead and plugged it in to charge it at 8:41 am. I do not know how to interpret the charts that well. But from what I can see something was continually draining the battery from about midnight on. https://picasaweb.google.com/pjw73nh/GalaxyS3BatteryIssue?authuser=0&authkey=Gv1sRgCMCe8fer0fHSBQ&feat=directlink Any thoughts or comments welcome. Thanks.