It varies so much country by country! China is 100% Wechat, Weibo, The Chinese version of Tik Tok, but in HK many people refuse to use them. As far as I know IG and Youtube are popular pretty much everywhere except China. In addition HKers use Facebook, whatsapp and now telegram. Taiwan: Facebook and Line. Thailand: Facebook, Line. Japan: Twitter and Line. India: Facebook and WhatsApp. Singapore: Facebook and Whatsapp