Phone with a Reverse Number Detection

Reverse phone detection is a service used to look up a huge number of records for you to search for. For a small subscription, one can access this service freely and anonymously, allowing trace of cell phone numbers for free. This service is the reverse or the opposite of the traditional phone search using a personal name to find a phone number.
Phones with this service need a special software which contain the huge data base or The Global Positioning Radio Service (GPRS) which provide access to the internet. The information in the phone number detection may sometimes not be helpful or could give more than the information required. However, It is not surprising not to find any details of what you are looking for.