How to Determine the GPS Location of a Cell Phone Number for Free

1. Find a free mobile phone tracking service. Most services today cost money, but Mologogo.com is not only one of the oldest GPS services--and it is also the only one that is free.
2. Sign up and download the software. Enter your name and e-mail address, then create a username and password. You can then download the software and install it to your phone.
3. Track the phone. Log on to the website and you will immediately see your location on the website. It will be denoted as a circle. You will then need to decide whether you want your location to remain public, private or available to your friends only. You can also take your location and publicize it to your blog or website.
4. Add your friends. Log on to the website and click on 'Add Friends' to allow them to see your location. You can also add search functions such as weather data and keep track of your last 100 points from your personal homepage on the website.