Hi has anybody any ideas on why my s3 mini uses battery like there is no tomorrow. I charged it before work and less than 24 hours later its down to 40% and I only checked it a couple of times. I have the widget for task manager on screen so I can stop any apps. The battery use says its and is 35%, device idle 25%, cell standby 22%, screen 13% and a couple of other system things arpt 2 & 3%. Any ideas.