Definition of Societal Marketing:

"The societal marketing concept holds that marketing strategy should deliver value to customers in a way that maintains or improves both consumer's and societies well-being."

From the the previous slides, it is apparent that the activities undertaken to spread and enhance the brand name of Grameenphone have a primary purpose of ensuring the welfare of general public as well as certain demographics in need. So we can conclude that GP believes in the ideology of societal marketing and adheres to it.