Previously i have written a post on how to track a mobile phone number in India online. Tracking mobile phone number will tell the state, network of that mobile phone number. But now you can track the exact location of a mobile phone online. Using Google Latitude, we can track the current location of the mobile holder. This will give us an accurate information of the mobile holder as Google Latitude tracks the mobile signal and other details.
You can find the detailed post on how to trace a mobile phone location online here.