While I agree that Whatsapp is the dominant chat app in Asia, it's not number 1 everywhere.
Notably - as you mentioned - Wechat in China, but also Kakao in Korea, Zalo in Vietnam and Line in Japan and Taiwan, where very few people use Whatsapp.
Notably - as you mentioned - Wechat in China, but also Kakao in Korea, Zalo in Vietnam and Line in Japan and Taiwan, where very few people use Whatsapp.