WhatsApp is updating its privacy policy for the first time since Facebook took control, and is making a number of changes.

The most notable among them is plans to work more with the main Facebook service – or ‘coordinating’ as the company said in a blog post – by sharing your phone number with Facebook’s systems.

Contact details won’t be made public and messages will remain private thanks to encryption.

The aim is to provide you with better friend suggestions and show you more relevant ads, but not everyone is keen to have their details shared with the social media giant’s powerhouse.

Thankfully, you can opt out and it’s easy to do.

How to opt out of sharing your phone number with Facebook

If you’ve just received the Terms and Privacy Policy update, tap the part below marked Read more about the key updates to our Terms and Privacy Policy.

Untick the box below and tap Agree, then you’re done.

WhatsApp Privacy Policy update

[Related story: What parents need to know about WhatsApp]

If you went ahead and clicked Agree without unticking the box before, it’s still possible to undo it.

Open the 3-dot menu at the top right of your screen and select Settings.

Click on Account and then untick the box at the bottom.