Precautions while using WhatsApp
When WhatsApp Discloses Information
Other users of the WhatsApp Service may see your Status Submissions in a way that is consistent with the use of the WhatsApp Service. For example, a status of Cant talk, please SMS instead set by phone number +1 408 555 1212 will be available to every user of the WhatsApp Service who has that mobile phone number in their mobile phones address book or contact list. In other words If another user has your mobile phone number stored in their mobile phone address book or contact list, they will be able see your status information unless you have chosen to block such user. Last Seen information is available and displayed to each user who has your mobile phone number in their mobile phone address book or contact book and which you have not blocked, and reflects the last approximate time the WhatsApp mobile application has been used or brought to the foreground on your mobile phone. Last Seen information is reported to WhatsApp when a user brings the mobile application to the foreground.