ios is how a network location?

Under no circumstances GPS, Wi-Fi via GRPS or positioning, ios is how to get the latitude and longitude coordinates?
Apple is not there a similar google or skyhook online services, records the correspondence between the router and the latitude and longitude coordinates?

Reply:
Use Core Location Framework, users do not realize the underlying relationship.
Reply:
You can also get location information via Cellid Yeah
Reply:

cited a floor darkdong reply:

use Core Location Framework, users do not realize the underlying relationship

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I want to know is that the underlying na ......