Mandatory WhatsApp Privacy Policy Update Allows User Data to be Shared With Facebook – MacRumors:
Users that agree to the updated terms will have their WhatsApp account registration and phone number, transaction data, service-related information, interaction information, mobile device information, IP address, and “other information identified… or obtained upon notice to you or based on your consent,” shared with Facebook.
When explaining how Facebook will use this information, the policy states that shared data is used for “understanding how our services or theirs are used,” “improving their services,” “making suggestions for you,” “personalizing features and content,” and “showing relevant offers and ads across the Facebook Company Products.”
It never ends.