The Facebook-owned company has over a billion users globally. A major chunk of these users are from emerging markets like India.
"When we started WhatsApp in 2009, people's use of mobile devices looked very different from today. The Apple App Store was only a few months old. About 70 per cent of smartphones sold at the time had operating systems offered by BlackBerry and Nokia," WhatsApp said in a blogpost.
It further said mobile operating systems offered by Google, Apple and Microsoft, which account for 99.5 per cent of sales today, were less than 25 per cent of mobile devices sold at the time.
The company said this is a "tough decision" but the "right one" in order to give people better ways to keep in touch.
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In February 2014, WhatsApp was acquired by social networking giant Facebook, its biggest buyout till date, for a whopping USD 19 billion.
Earlier, WhatsApp had said its service has seen a strong uptake, specially across developing nations such as Brazil, India and Russia.
WhatsApp competes with messaging apps like LINE, Viber and Hike in India.