To track the location of a phone number you can do a phone number lookup online which will give you a general idea and location of where the cell phone number is coming from.
However unless you have access to the cell phone or work for the cell phone or phone company there's no way to actually track the exact location of the cell phone or phone.
To track a cell phone location for free you can download and install apps on the cell phone but you must have access to the cell phone to install the app to track it.
There are cell phone apps for android and other cell phones that you can install and use to track cell phones with just the number for free.
The Google Play Store has many apps to choose from to allow you to track cell phones with just a number.
You can also track a cell phone number for free by using MobileNumberTrackr.com
There's also other cell phone number tracker apps and websites out there.
You can usually track someone's cell phone number for free through use of apps but you need to have access to the phone to install the app to track the cell phone.
You can look up the owner of a cell phone number through online websites such as https://www.spydialer.com/ or spokeo for free.
Just enter the cell phone number online through those websites and then the cell phone numbers owners information will show up but to get more information you may have to pay a small fee.
Now as far as actually tracking the location of the cell phone through the cell phone number there's no legit way of doing so unless you own the cellphone and install GPS tracking software or apps on the cellphone.
Then you can go to the GPS tracking website and track down the location of the cellphone however if the app is turned off on the cellphone or the cellphone is turned off then there's no way of actually tracking the cellphone down.
If you need to have a cellphone tracked down then the cellphone company can usually track the location of the cellphone if there is a legit reason for the cellphone tracking and usually only law enforcement can have the cellphone company track down a cellphones location.