Airtel has expanded its mobile operations in Africa through acquiring Zain's operations in 14 African countries in 2010. It now operates in 16 African countries. Airtel faces challenges in Africa including a diverse market unlike India, cultural differences, poor infrastructure, and complex regulatory environments across multiple countries. It has adopted strategies to overcome these challenges such as outsourcing key operations, restructuring into two business units focused on B2B and B2C customers, and standardizing operations while allowing for local adaptation. Airtel aims to leverage its expertise in low-cost operations from India and bring more affordable mobile services to African markets.