

The “Send in WhatsApp” button will now appear on posts for the people who have a “public” privacy setting in News Feed. Further, this option will only appear for people who have WhatsApp installed on their phones. “We’re making it easier for people to share posts they want to have conversations about with their WhatsApp contacts. This function already exists in ‘More Options,” a Facebook spokesperson said in a statement.Facebook uses the Android PackageManager API -- which is available in all apps on Android devices -- to check whether or not WhatsApp is installed on the device. Unconfirmed developments suggest that there is no data sharing between Facebook and WhatsApp as a part of this feature. WhatsApp does not share a person’s WhatsApp account with Facebook when using this feature, though.