The Show Caller ID mobile number tracker app not only identifies most of unknown calls but shows regions on incoming calls, so you can see the true caller ID and names of people who are calling.
There are a number of mobile number locator apps available online which can be used to track the location of a phone.
Mobile Number Tracker app is available for Android devices only. It uses tracking to provide real-time location information about a phone.
Mobile Number Locator: This app is available for both Android devices. It uses the cell tower triangulation technique to provide location information about a phone.