There are not many qualities when it comes to finding the perfect cell phone directory. The main thing that comes to mind for me is they cell phone directory needs to do one thing right, they need to have the ability to lookup cell phone numbers. That will require a significant investment on their part. Basically companies in this business will purchase cell phone numbers from 3rd parties and load them into their cell phone directory. The 3rd party might be some company taking applications on thing that requires first and last name and optional cell phone might be there. If the cell phone number is entered then that data is potentially something that company will sell. They have to go through all of this effort because cell phone numbers are considered private. So unless you offer it or opt-in to a service no one can put your name and cell phone number together.
If the cell phone directory can hit my first point above they are some additional things you can look at next. Free cell phone directory is also nice. Right.. To offer something free you really have to wonder what the catch is. In most cases the perfect cell phone directory will offer the search for free on their cell phone directory and then search pay cell phone directories for you to see who has the cell phone number and name you are looking for. If found they will charge the pay cell phone directory for the lead and send direct you over. To me that is really the perfect cell phone directory. To break it down a bit for you the directory makes an attempt to find the information for free for you then redirects you to cell phone directory that has the information. It really doesn’t get any better then that.