Is there any way to track a person from his mobile number?

Question

Is there any way to track a person from his mobile number?

Answer 1

Only with his/her permission.

Answer 2

If his phone is properly equipped (with a GPS receiver or a transponder that reacts to signals from the cell phone company towers), the cell phone company can locate him, and certain on-line services (again, if the phone is properly equipped) can provide a "tracking" capability but YOU can't track someone else by just knowing his/her sell phone number.