Spy in your pocket. How can your mobile phones give out your geographic coordinates?

After a report appeared in Lente.Ru in early February 2011 about the arrest of twelve Somali illegal immigrants in the Netherlands on charges of preparing a terrorist attack, some readers were concerned about the mention of the detention technology: it was in fact publicly announced that using GPS modules in cell phones, sending a message to the numbers of the illegal immigrants, which was processed by the cell phones without the knowledge of the owners, and then from the cell phones (again without the knowledge of the owners) automatically Sokis went SMS with the location of the devices. Judging by the fact that the detentions were made in seven different places, this technology should have worked in seven mobile phones (out of a maximum of twelve), so that it is probably common.

It turns out:

1) Having an SMS center legally connected to the SS7 global network using a simple MAP request, and knowing only the subscriber number, you can find out its IMSI (SIM number), and the address of the switch that serves the subscriber and the state of the cell phone (on or off). Read more - over there . If there is a map of the binding of switches to the locality, then this gives the approximate coordinates of the subscriber.
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2) There is a standard RRLP describing the method of reading from a GSM-mobile phone its exact GPS-coordinates through a mobile network. They write over there that many smartphones with GPS (especially state-made) support this standard, since it was conceived as a means of determining the coordinates of subscribers in trouble. It is enough to create a fake cellular node near the subscriber in order to achieve the desired one indiscriminately.

But these or not these methods used in the Netherlands?

Secret.