Quote:
Originally Posted by Akirainblack
I can completely understand not agreeing with doctoring the 3G side of things and you make a highly valid point.
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As if you could "doctor" 3G . . .
Remember, one name for that service is "cell ..." - - -
What is a "cell ..." in this context?
Mobile (radio-)telephones where originally high power, large area devices.
"Large" in the sense of a big metropolitan area.
A generalization for this post - call it a (minimum of a) twenty mile radius.
The "problem" (where "problem" is defined by the people trying to sell you telephone calls) is there where more potential users within that large area than the required bandwidth to support the number of simultaneous calls that population would make.
So a new "cell" based system was designed . . .
Each fixed transmitter location, and each mobile client location (your pocket) would be "short range" devices.
A generalization for this post - call it a (maximum of a) two mile radius.
I.E: 1/10 the distance == 1/100 the power (its a square-law relationship).
But what to do if the client was moving (the old radio-telephone service was for automobiles)?
How to service them if they wandered a few too many blocks away?
The answer: Multiple fixed location transmitter locations with overlapping service radii.
Then the telephone circuit switching equipment could switch your call to the closest (highest strength) fixed location -- **during** the progress of your call (rather than just when you placed the call).
Ah, but the system needs to know **where** the current **strongest** location is, so that it can be ready to expect where the next **strongest** location will be if you are moving.
Translation: The fixed locations are geo-located (in these days, by GPS) and that information is included as part of every burst transmission received that is passed into the system for routing from moment to moment.
The "older" (older than last week) e-ink Kindles only supported 2G/3G services and client GPS was not required by those services.
The modem/radio in those "older" Kindles do not have GPS.
Although many make/models of 2G and/or 3G modem/radios do have GPS installed.
In the 4G service, client GPS is required.
So regardless of how someone tried to "doctor" the transmission, the system knew within a two mile radius where you are. It **HAS TO** just to work and that information is added at the fixed location you are currently using - outside of the client's control.
2G/3G with optional client GPS or 4G service, your geo-location is known within a few feet (call it within a meter).
Sorry folks, you aren't going to hide your true location from "cell" 'phone service, just not going to happen.
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Before someone posts a contradiction - -
Yes, such things as a "3G proxy" do (or at least could) exist.
But why? It takes just as much investment in equipment to "blind proxy" a cell phone call as it does to go into the business of selling cell phone calls.