Hey Tiktok fam! So you've got a 3D PDF file and you wanna view it on your iPhone? No worries, I've got you covered. Here's how you can do it:

First off, you'll need to download an app or software that supports viewing 3D PDF files on your iPhone. There are various options available on the App Store, so just search for '3D PDF viewer' and pick one that has good reviews and ratings.

Once you've downloaded the app, open it up and import your 3D PDF file into the app. This is usually done by tapping on the 'import' or 'open file' button and selecting the 3D PDF file from your iPhone's storage.

After the file is imported, the app will usually have tools and features that allow you to navigate and interact with the 3D model in the PDF. You can rotate, zoom, and pan around the 3D model to get a better view of it.

Some apps may also offer additional features such as annotation tools, measurement tools, and cross-section views to further enhance your viewing experience.

So there you have it! It's actually quite simple to view 3D PDF files on your iPhone, you just need the right app or software to do it. Happy viewing!