Hi, A few times over the last couple of days my phone has been draining battery incredibly quickly over a very short period of time. Every time this has happened it has occurred overnight whilst sleeping and it appears to be the screen turning itself on and staying on, thus draining the battery (See attached screenshot). When I view battery usage, screen has taken up the majority of power used (>50%). I haven't installed any new programs recently and haven't been doing anything out of the ordinary with my phone. Usually I'm very good with my battery and can get about 4 days out of it if I'm lucky, as I tend to follow all advice about longevity. I've taken a look around the forums and can't find any people with the same problem - any help would be much appreciated!