Worldwise: How to stop WhatsApp from sharing your contacts with Facebook: Whatsapp Shares with Facebook

Seeing as this goes against WhatsApp's previous policy of never sharing your information with its parent company, this update to the terms is understandably rubbing many the wrong way.

Fortunately, you can opt out and remove yourself from the whole situation very easily. Here's how:

Open WhatsApp on your phone.
On Android, tap the action overflow button in the upper right corner and selectSettings. On iOS, tap the Settings tab in the lower right corner.
Select Account.
Tap the check mark to the right of Share my account info.
To disable the feature, tap Don't Share.

The pop-up that appears reads, "If you tap 'Don't Share', you won't be able to change this in the future." And they mean it. After you follow through with this action, the option will no longer be visible from the Account section of Settings and there is no turning back.

On the bright side, your account information and app usage won't be shared with Facebook anymore. Though, it doesn't say whether it has already shared your information or whether, if shared, that information will be redacted.