iPhone iOS 11 content in third apps by Spotlight

[emil234]

I would like to ask you if in iOS 11 can we search content by spotlight in third apps like Facebook messenger, WhatsApp, viber, google drive etc.
Below screen from Viber where they said that we can from iOS 9 and above ( in iOS 10 I’ve checked it but without success)

 

[Knightcastle]

It works

 

[emil234]

Can you please send some screen that you can search content into third apps. Maybe I have set something wrong.