Samsung Galaxy S25 Edge Teardown: Inside the Ultra-Thin Marvel

Samsung Galaxy S25 Edge Teardown Reveals Clever Design Trade-Offs

Samsung’s latest flagship, the Galaxy S25 Edge, is more than just a sleek piece of tech-it’s a testament to the company’s engineering focus on minimalism and internal optimization.

A recent teardown by Zack from JerryRigEverything gives us a detailed look inside the ultra-thin 5.8mm frame of the device, showing how Samsung squeezed flagship-grade power into such a compact shell.

The back of the S25 Edge pops open with heat and suction-fairly standard in the smartphone world. Inside, things get interesting. There’s a noticeably slim vibration motor, and the waterproofing membrane covering the speaker is installed at an angle, a necessity due to the phone’s exceptionally thin form factor. While that design choice may seem trivial, it showcases the extent to which Samsung has pushed structural creativity to preserve water resistance.

One of the standout features is the battery removal system. It’s possibly the easiest on the market, part of a broader effort by Samsung to make at least some components more serviceable. But here’s where it gets nuanced: although Samsung claims the phone’s slim profile is largely thanks to battery optimization, teardown viewers pointed out that making just the battery thinner doesn’t reduce the overall device thickness unless all components are slimmed down-or stacked vertically, which seems to be the case here.

The motherboard and midframe design also reveal major efficiency moves. The SoC is in direct contact with the vapor chamber, improving thermal management. Compared to the S25 Ultra, the Edge has a thinner middle PCB layer and features ‘slivers of frame’ removed wherever possible. While the outer case is titanium, there’s an inner aluminum frame-combining premium feel with internal weight reduction.

Critics have noted the missed opportunity to include a larger battery, especially since users continuously request it. Interestingly, Chinese brands often manage to do just that while keeping phones slim. The teardown makes it clear: while thin phones look good, they often involve compromises in thermal performance, battery life, or camera bulge. Could a slightly thicker phone offer more? Likely. But for now, the S25 Edge walks the tightrope between form and function with impressive finesse.

Watch the full teardown to see every component in action and decide for yourself if the trade-offs are worth it.