I decided to stuff the BBC 3G survey on to an Android phone. The phone was fully charged and left for approximately 1 day on a desk with no one using it.
This is what the battery usage graph said after a day:
How much power usage?!
A bit thirsty aren’t we? 
Also, the thing appears to not discriminate between user-selected 2G and auto-discovered 3G. As I live in the back of beyond but somehow manage to get very marginal 3G coverage, I usually keep my phone pegged to 2G to stop it meandering all over the place. Presumably this would skew the results somewhat…
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