Further disassembly might not yield much, but that's what X-rays are for. Here's a closeup of the strain relief at the cable attachment point, and a nice closeup of that USB-C connector.

If you're hungry for even more iPhone 12 content, check out our latest story: How LiDAR Works, and Why It’s in the iPhone 12 Pro

And when you're done with that, check out our teardown of the iPhone 12 mini!