For many iPhone 4 and 4S owners, iOS 6 has been a mixed blessing. The features are terrific, but many users are reporting huge amounts of battery drainage that never was the case before the system upgrade. As an iPhone 4S owner, I can tell you from first hand knowledge that my iPhone loses about ten percent of its charge per hour without doing anything but sitting in my pocket. I noticed that with the lock screen set to two minutes, and the screen turned off, the iPhone feels quite warm, as if it’s doing something. Many have blamed this on the Maps app, but I haven’t even run the Maps app, so for me, that isn’t the problem. Read the full story at Mac Observer.