Choose the subscription package and purchase mSpy;
Install and set up the app;
Monitor the route history, set safe and dangerous areas and view the current movements on the detailed map.
Apart from the GPS location you will have an access to the text messages, call logs, Internet history and many other useful features.
Each of 3 options is sufficient and forceful. In spite of the fact that first two allow you to track the location of your own phone, mSpy gives you a possibility to track the phone of the other person.