In this study, the southern part of West Java Province, especially along the southern coastline in Cianjur Regency (in part), Garut Regency, Tasikmalaya Regency, and Pangandaran Regency, has tremendous potential. For the southern path of West Java alone, 417.4 km connected, from the start of Sukabumi Regency to the west of West Java, to Pangandaran Regency in the east of West Java, the potential and uniqueness of almost all new roads along the southern path of West Java show the extraordinary beauty and natural resources of West Java. Almost all roads on this track it is very neat, new and sturdy bridges. The residents along the southern coastline of West Java have begun to be busy in fishing industries, farms, timber industries, and other industries. But the means of cellular communication, especially along this route, which was the object of research in this study, signals exist and do not exist. There are some 2G, some 3G, and 4G will begin to appear when entering Big cities such as Pameumpek and Pangandaran. This research is expected to be able to map all blank spot areas, cellular operator signal services, especially on the new road along the coast in South West Java to the east from the starting point east of Cianjur Regency to the west of Pangandaran Regency. Desimination tools using geographic information systems, the method used by geoprocessing will overlay regional maps, satellite maps, and cellular operator BTS signal maps.