The WhatsApp proceeds to an important change by adding terms which allow it to share user data with the motherboard company of, Facebook.
The company says it needs to share the data so it can test within the next two months characteristics, όπως “τρόπους για να επικοινωνείτε με τις επιχειρήσεις που έχουν σημασία για εσάς” και “ειδοποίηση από την τράπεζά σας για μια δυνητικά παράνομη συναλλαγή, ή για να σας κοινοποιηθεί από μια αεροπορική εταιρεία η delay of a flight".
It is worth noting that the items included in the terms of use are: your phone number, profile name, profile photo, online status and status message, your last login and receipts. This means that it will read and send the receipts if the option is enabled. It does not include the content of your messages.
Maybe all this makes you feel a little uncomfortable. Whatever his purpose Whatsapp are targeted ads. If you are interested there is a way to do not send your details.