After testing the Galaxy S25 Edge for durability, “smartphone destroyer” Zach Nelson took the device apart to uncover how Samsung managed to reduce its case thickness to just 5.8 mm without sacrificing durability. It turns out the company didn’t just reduce battery capacity but also made several significant design changes.
The teardown started with peeling off the back cover, revealing the wireless charging coil and battery covered with cables. Nelson noted that the screws inside vary in length depending on their location, so it’s important to remember their positions to avoid damage during reassembly. The battery is secured with double-sided tape, similar to the Galaxy S25 Ultra base model.
During the disassembly, Nelson highlighted key features that contribute to the slim body of the S25 Edge:
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A relatively small battery capacity
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A compact linear vibration motor
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A case frame free of unnecessary protrusions
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A Type-C port with contacts directly cut into the body
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A much thinner middle layer of the motherboard
Despite the slim design, there is still space for an evaporation chamber under the battery for cooling. At the end of the video, Nelson successfully reassembled and powered on the smartphone without any issues.
