WhatsApp yog ib daim ntawv thov kev xa xov dawb thiab suab / video hu, muaj rau smartphones nrog Android, iOS, Windows Phone thiab BlackBerry operating systems. Nws tau tsim nyob rau xyoo 2009 los ntawm Jan Koum thiab Brian Acton, ob tus neeg ua haujlwm qub Yahoo! Inc., thiab tau txais los ntawm Facebook hauv 2014 rau $ 19 billion. WhatsApp tso cai… Nyeem txhua yam