dammybas:
It's no news that for the first time in four years (since 2014), Whatsapp has amended it's privacy policy and user terms. When Facebook bought Whatsapp for about $19billion in 2014, the co-founder of WhatsApp Jan Koum promised Whatsapp will stay true to their promise. So what is changing?

The new policy states that there will be data sharing with Facebook. Note that this data does not include your messages or photos which are protected by end-to-end encryption. So what data is Facebook looking for?

Whatsapp plans on helping Facebook improve the Ad experience on facebook and its products to make accurate count of unique users and fight spam and abuse. The updated policy also states: "..we will share some of your account information with Facebook and the Facebook family of companies, like the phone number you verified when you registered with WhatsApp, as well as the last time you used our service...". This means that shared information will include name of device, online status, usage and log information.

The WhatsApp Official Blog says its to help the following:
1. Provide Better Targeted Ads to Facebook users
2. Help prevent Spam and Abuse.
3. Help provide better total user experience for Facebook users.

Note also that existing Whatsapp users are free to opt out of the new terms within 30 days by going to Settings >> Account >> Share my Data

Full reading: https://dammybas..com.ng/2016/09/new-whatsapp-privacy-policy-should-you.html

PS: Whether you accept or not, WhatsApp is already sharing some of your data with Facebook.