Mobile pics

How can i make the images of the article (in mobile versio) to be zoommable?

I mena i click on them and they show a bigger version but if I pinch to zoom it doesn't zoo, any way to make it so?

Thanks

Hello,

Could you please provide me with a URL to your site with example article, either here or via PM (click the “Private Message” text underneath my avatar) so that I may analyze it?