So as the title eludes to, this is about tethering my iPad 2 to my iphone via bluetooth. As such my bluetooth is almost always on, it is the main way I access the internet on my ipad. So what i wanted to know here has this method been subject to reports of a decrease in general battery life when compared to being connected via wi-fi? I say this because my battery seems to drain pretty quickly. Although i could be being paranoid. Can anyone shed some light on this? Thanks in advance.