In the last half decade or so, the buzz phrase in the business and research arena is Big Data and Big Data Analytics. One industry that can reap substantial benefits from big data and analytics is the mobile phone industry. Nigeria in the West Africa is one country where mobile phone market is considerably big. Over 90 per cent of individuals and corporate businesses completely rely on the mobile industry for their day-to-day transactions. Embracing advanced analytics of big data by the mobile operators in Nigeria will impact positively on revenue and reflect on GDP. In this paper, we discuss the business impact of big data analytics in the light of telecom industry. We point out the various ways the industry could leverage on big data and analytics to render customer-centric service and reap a good return on investment.