South Korea’s Samsung Electronics has unexpectedly doubled its production capacity for smartphones and home appliances at its big factory near New Delhi, India, according to JoongAng Daily.

The US$766 million expansion at the plant, which already covers 30 acres, follows recent news that India has overtaken the US to become the world’s second-largest smartphone market after China.

Samsung’s plant outlay is 2.5 times what the company promised last October when it signed its agreement with local authorities.

About 10% of the world’s Samsung smartphones are made in India and 70% of these are sold locally, JoongAng Daily reported.