Connecting to internet using Wi-fi portable hotspot or bluetooth? which one is more battery saving? I have EDGE internet connection in my Samsung Europa I5500L (Froyo 2.2). I can connect to the Internet from my laptop using both bluetooth or making a wifi hotspot from the device using that EDGE connection.

{internet}-----[phone]-----{wifi/bluetooth}-----[laptop]

My question is which one will be more battery saving for both my laptop and mobile?

Thanks for your answer.
Generally Bluetooth uses less power. On my HTC Desire, I use Bluetooth because it lasts longer and consumes much less power compared to Wi-Fi hotspot when connection is idle.