I have charged and discharged my new SGT at least a half dozen times. There was one instance where I had it off for 4 or 5 days and the battery did drain down completely, hopefully I didn't mess up the battery. This leads me to my issue. I can fully charge it, turn it off completely and after 2 or 3 days, when I power it back on, the battery is close to only half full. This seems very odd to me, and I was hoping someone had a quick answer as to why. I run it in flight mode because I only use it via wi-fi, that means it has never been activated with a data plan. By putting it in flight mode I stopped the annoying messaging telling me to activate it. I also ensure I turn off wi-fi before powering it down. The only thing I can think of is that even with it off, somehow because it was never activated, could it be possible that somehow it is processing something still? Almost sounds impossible, but I have never experienced this with any of my Android phones. Any thoughts?