battery power under wifi

On heavy data usage does the battery lasts longer with wifi on or just the 3g radio?

I have unlimited data plan and turning the wifi radio has been an afterthought. However i am very upset that I have to charge my phone twise a day si I decided to turn the wifi radio on whenever possible.

Any experiences?

I don't get a data signal at all at home so I am always on wi-fi there. The battery life is much better under these conditions.

:)

Originally Posted by byul

Battery-life will last longer when connected to wifi.
Turn wifi off when you don't need/use wifi or whenever out of range.

^ +1
It's more taxing on a battery to pull data off the cellular network than over WiFi.

Thanks people for your advice. I guess I got sloppy with this whole unlimited data plan (unthrotled, truly unlimited, and cheaper too).

I like listening to tune-in and nobex radio whenever I go out and in any given hour my battery power drops as much as 25%.