We know that Facebook eventually plans to integrate WhatsApp into Facebook’s other apps. As reported by WABetaInfo, reverse engineer @Alex193a has discovered evidence of this in the latest version of Facebook Messenger. The list below shows the mentions of “whats_app” references. This could be a pre-cursor to the long process that it will be to integrate Facebook Messenger and WhatsApp users. The main difference between both messaging platforms is that WhatsApp stores chat information on-device in addition to end-to-end encryption (along with the ad-free experience). This is why WhatsApp...
Source: https://www.gsmarena.com/facebook_messenger_shows_early_signs_of_crosschat_support_with_whatsapp_-news-44130.php