Find the current location of mobile without using the GPS

I am developing an restaurant开发者_开发技巧 locator for that i need to find the current location of mobile without using the GPS, is it possible?

kindly help me with the codes

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Yes you can use the NETWORK_PROVIDER but why would one do that?

http://developer.android.com/reference/android/location/LocationManager.html#NETWORK_PROVIDER