Just heard this news item that might affect a lot of people with I phones (including me). Apparently Apple is going to pay I phone owners for the inconvenience. I wonder if this explains the short battery life on my old I phone when I'm outside on a cold day? It will go from 100% down to 20% just riding along in my pocket after an hour or so. 
Only applies to Canada. 
Apple to Pay Canadian Customers Up to $150 Following iPhone Battery Controversy - MacRumors