how to get location from cell tower and wifi?

[anubhuti]

Hello

I am new to iphone and i want to know that how can i get location through wifi and cell tower in ios 4. I read apple's document and i found that ios 4 has its own gps services and through its api we can get location of iphone but except that i also want to get location using current wifi or from cell tower triangulation . please give some idea or sample code.. thanks

[TUX2K]

You can't specify how the location is retrieved, you will need to go true the CoreLocation locationmanager.