On Thu, Dec 30, 2010 at 8:55 AM, t <[email protected]> wrote:
> 1. i see that keeping the GPS provider activated drains the battery.
> do you have suggestions to why is that?

Because it keeps the GPS radio on. The GPS radio draws power. Drawing
power drains the battery.

> 2. continuing to my first question, how does the update listening
> mechanism work? i'm guessing the satellites don't know all the phones
> and push updates to them, so is it really a check every X seconds
> (depend on the configuration) whether the location has changed?

You can learn about how GPS works in any number of places, such as:

http://en.wikipedia.org/wiki/Global_Positioning_System

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