Since technology has developed so much in the last decade, we have reached a very high level of intelligence in what regards technologic domain. We nowadays have mobile phones that act as computers, we can communicate globally and we can controle anything just by using a remote control. Mobile phones were invented many years ago, and once with their appearance people started to communicate easily.

Mobile phones as well as fix phones are a necessity nowadays. The fix telephony was very useful, and it made people more available, because when you want to talk to someone you just dial and call. Some fix telephones have answering machines so, you won’t miss any call. Because everyone has a phone and a phone number, someone had to do something about his. So, following this idea, Phone Directories and International Phone Directory Asistance appeared.

A phone directory is a list of all the telephone numbers in the city with the coresponding names and addresses. This idea has come to be great because if we want to find someone, we could look that person up in the telephone book and the problem is solved. Each country , city has it`s phone directories. The most common phone directories are the White Pages and the Yellow Pages. The first phone book includes all the subscribers in a city, with their names and addresses listed in an alphabetical order. Yellow pages, indicates a business directory classified by business type or services provided, through paid advertising. Besides these ones people can find in different areas Grey pages, sometimes called a "reverse telephone directory" or phone directories with other colours depending on the country’s customs.

Besides all these phone directories, customed around the world, people should know that there is also an International Phone Directory Assistance. International numbers that are available for any person from any country . These numbers are usually the numbers of multinational companies, fundations, emergency numbers associations etc. The International Phone Directory Assistance is a phone list that is mostly known by people that are aware of it. Not many know that they can call internationally a firm. Few know that they can call special numbers and donate money for special causes etc.

International Phone Directory assistance may also include a number where you can cal land get assistance, help. all the numbers for emergency are international so, people can cal land receive help immediatelly.

The bad side about this phone directory, either international or national, is that mobile phones are not listed. Nowadays everyone has mobile phones and the fix telephony is mostly used for companies and firms. In the end, the idea of having a phone directory , a list of numbers and addresses, is great , you don’t lose time if you are searching for someone or something. Business people use the yellow pages very much and so, it`s helpful in many ways.