Hello I've had a Samsung Galaxy S3 for ages, unfortunately for me, the phone recently just switched off, then on, then won't go past the "Samsung" screen. Ah, I thought (well, something a bit more sweary) - but I had a backup identical model phone in case one broke, so I started using that. Moved all my apps, installed banking app etc, and then happy. Or so I thought... The new (well, it's an old phone, but one I haven't been using, bought as back up) phone now switches off when charging every night, an issue which was going to switch to me charging it during the day when I can stare at it and see if anything happens to make it switch off, but then I realised it switches off each night even when it isn't charging. I have a bigger battery to hold a charge for a few days, and so even when I don't charge it, just have it next to me as I sleep - and next morning it will be off. I presume it might be switching off around 5am... this is only a rough guide as if I switch it back on, and flick through the phone, I see my unread emails are up to around 5am, and then after a few minutes it logs back into the internet etc and brings me newer emails. I first thought it was that it kept switching off when charging... but now I know it does it at (I presume) the same time every night even when it's not charging. Can't use it as an alarm clock anymore, as it's off before the alarm goes off. Anyone have any idea what's happening?