Mobile devices are small, so tab management in the mobile web browser is important.
Consider a normal user on a mobile device. They'll visit your webpage with an embedded 3D model. They'll tap on the play button, which will open the model in the same tab.
You can change this behavior by adding the &nt=1 URL parameter in your embed code - see below.
Now when the user taps the play button, the Matterport model will open in a new browser tab. This makes tab management easier for the user, and it's easier for them to return to your webpage and re-engage with your site.
Open this Help Center article on your smartphone and try it out with the embedded model below: