I've got an iPhone 4 running iOS 5.1.1 and it is charging ridiculously fast. As I write this the phone has been plugged in for less than 20 minutes and has gone from having no battery left to being at 32%. Battery life does appear to have decreased a little, especially when browsing via wi-fi or 3G. Does anyone else have any experience of this or know any fixes? I'm due an upgrade not long after the next iPhone comes out so will more than likely being actioning that but I'd like to get this sorted. Many thanks.