What do think uses more energy -- your iPhone or your refrigerator?

A few years ago, I think everyone would've said the refrigerator, but today we all know it has to be the iPhone.

A new report says that a fridge uses just 322 kWh per year, compared with the 361 kWh for an iPhone, if you include its wireless connections, data usage and battery charges.

If you have an iPhone, you know the more apps you leave open, the faster your battery drains. Playing games and using Twitter also drain the battery.