I am currently on an iPhone 4. I had a og droid before the iPhone, I have a few questions regarding the Samsung s3 or the razr maxx hd. I know the razr maxx hd could get me through a whole day on a charge. I have been looking through battery stats of the Samsung, can someone explain how long on average the s3 will go on a charge. I keep seeing on battery times of around 8-9 hours, is that just time of charge? If so that's barely enough to get through an average work day without charging. Can someone help me understand that?