The most notable change is how WhatsApp shares information with Facebook and its subsidiaries, Hindustan Times reported.
The company has also updated details about a user's connections. "If any of your contacts aren't yet using our Services, we'll manage this information for you in a way that ensures those contacts cannot be identified by us," the company said.
WhatsApp informed Android and iPhone users through an app notice that emerged on Tuesday. As per the notice, users have been given an option to agree to the update directly from the full-screen notice.
Prior to the latest update, existing users were provided with the option to choose not to have their WhatsApp account information shared with Facebook. This, however, seems to be not the case this time.
Users will have to accept the updates to continue using the app on their devices. If any user fails to accept the new changes, they will lose access to the app.