Unfortunately, it is not possible to locate someone's exact location based on their cell phone number alone. However, there are a few steps you can take to try and locate them or narrow down the possibilities:
1. Contact the cell phone provider for the person whose number you have - they may be able to provide information about the location of their customer based on the signal that is being picked up by their tower.
2. If you know what social media accounts they use, check if they've shared any recent geotagged posts that could give an indication of where they might be located.
3. Try using online reverse search directories which allow users to search for people with specific numbers in order to find out more information such as potential address and contact details (e.g., White Pages).