The latest 100 million customers have joined the Airtel family in less than two years, the company said in a statement.
Bharti Airtel, which began operations in 1995, reached the 100 million customers mark in 2009 and crossed the 200 million mark in 2012.
The company ranks as the fourth largest mobile service provider globally and second largest globally outside of China. Bharti Airtel is the largest telecommunications company in India by customers and revenue and the first company to launch the countrys first 4G services in 2012.
Gopal Vittal, Managing Director and CEO (India and South Asia), Bharti Airtel said, This milestone underlines the strength of our operations, which is one of the largest on a global scale... I am confident that Airtel will continue to be at the forefront of this future growth story.
Airtels mobile networks cover over 1.85 billion people across its operations in 20 countries and carry over 311 billion minutes of calls every quarter.