I've had my iphone 5 16GB since early December 2012 (week 45 model) Have always had a consistent battery life and my usage is very similar each day. I always kept track of my battery life percentage - ie. battery was always around 65% by lunchtime, 40% when I left for home and approx 15-20% when I got home Everyday it has been exactly the same within a few % points. All of a sudden... Today - I was at 82% at lunchtime, 64% when I left for home and still 57% when I got home. As I go to sleep now - my phone is on 35% I know this sound strange, but too be honest something similar happened a few years back on my Blackberry 9000. ---------------- Any ideas? Has this happened to anyone else?