This study is to identify the impact of Advertising  on the marketing Global system for mobile (G.S.M) Communication  in Enugu a case study of MTN Nigeria Communication Limited.

The main purpose of this research among others is to know the important and benefit of advertising to the general public such as those in the top position both federal, state and local government level.  Also to the business class they can now  obtain and give information to one another  any time they want  it.

The  successful implementation of the advertising will help to bridge the gap between the rich and  the poor in terms of NITEL being the  only source of telephone communication in Nigerian.  It also intends to check the influences of advertising on purchasing habit of subscribers.  To  find out methods of budget allocation to advertising by MTN Nigeria Communication Limited.  The effect  of such  influence, if any  on sales in MTN Nigeria Communication Limited.

The major and promotion types adopted by MTN Advert enable companies to tell widespread  but selected audience about their products or service in the word of their  own choosing when and where they believe their subscribers are most likely to see them.

The simple act of  advertising make an important statement about a company, that it has a product of services of which is provided that meets a particular need which it backs publicity with its name and reputation and that would be of vale  to the subscriber and is prepared to compete for it.