I sometimes get this really strange battery drain whereby the battery will drain from around 60% to around 30% in literally the space of only a couple of minutes, whilst I am using the phone to browse apps?! As an example, this morning, I was using the app 'Newsify' which a glorified RSS reader for all the news articles which interest me. I opened the app and noticed that my battery showed 57%. I then browsed through the app, reading what I wanted to read (no video articles which could consume battery life) which probably took no more than 5-10 minutes. As I was then finishing off and reading one of the last articles, I happened to glance at the battery which now showed 37% How could the battery have jumped from 57% to 37% in less than 10 minutes of usage?! I know I didn't misread the numbers as this situation has happened before! The above, all happened at around 8am this morning (whilst waiting for my train to commute to work). Its now 4pm and as I now glance at my phone, its now sitting at 36% and has been all day (I have used it a few times to send and receive some texts but that is all - it has been in sleep mode the whole time). Its as if my phone sometimes experiences a massive lump sum drain in the battery (the 57% - 37% drop) and then realizes that it does in fact actually have more than 37% left and then proceeds to sit at that level (36%) for the next 4 hours or so....?!?!? Totally weird.............?!