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Old 05-07-2012, 07:03 AM   #6 (permalink)
hrbuckley
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Default Re: Need to Know Mobile is in Motion State

A cell phone communicates with the network through one cell (a radio tower that interfaces the carriers network to the cellphone frequencies) at a time. A change from one cell to another, or a significant change in signal strength can indicate a change in location. You will need to develop a set of appropriate heuristics to determine when it is appropriate to start the GPS. Starting and stopping the GPS on a cycle shorter than 10 minutes actually takes more power than just letting it run.

If you are not familiar with these concepts I would suggest that you do some research into how mobile devices operate before taking on such a complex project.
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