> And the radio is necessarily always on.

Yeah, but...

I was under the impression that, in normal operating mode, the GSM radio
is in a low-power state. That's why you have "talk time" versus "standby
time" in mobile device battery life specs -- when a call begins, the radio
stays in a high-power-draw state until the call ends.

So, the question is: with an open-but-quiet Internet connection on a
carrier data network, how much power draw is there from the GSM radio?

There's also the scenario of the device being on WiFi instead of GSM, but
that's probably not as frequent.

--
Mark Murphy (a Commons Guy)
http://commonsware.com
_The Busy Coder's Guide to Android Development_ Version 1.4 Published!



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