WhatsApp, well known for its popularity and now a Verb used instead of SMSing.
Can you WhatsApp me ?
Has replied to the competition offered by WeChat by introducing PTT or so called Push to Talk.
The early adopters and youth who were amazed by this feature by WeChat will have this same feature available on the most popular chat client.
Considering WhatsApp does not spend crores on ads like the way WeChat and Line are doing in India, WhatsApp can spend that money in building features features and features and just leverage on existing user-base to spread the word and get more users.
In short, the point is that, today or tomorrow users who are trying WeChat and Line Will Surely Come Back to WhatsApp.
Happy WhatsApping 😀