Battery consumption when touching the iPhone 4 antenna. I want to share with you all an assumption...

I've noticed that when I'm holding my iPhone 4 the battery drains faster.. Is it possible that when you are holding it the iPhone raises the antenna's power to reduce the signal loss?

Signal weakens when I'm holding it, doesn't matter if I'm touching the death-grip. When I bridge the antennas, signal weakens ever more..

My hypothesis: not using a bumper, not only would affect your signal, but your battery.

Do you think this is possible?