iFixit has dismantled the Galaxy S9+
For the Galaxy S9 and S9+, Samsung introduced a groundbreaking feature: a rear main camera with a variable aperture that can switch between F/1.5 and F/2.4. This is the first time a smartphone has incorporated such a mechanism, allowing users to adjust the amount of light entering the lens for better low-light performance or sharper images in bright conditions. Many are eager to see how this works in practice, and iFixit recently obtained a real unit and started dismantling the Galaxy S9+ to explore its inner workings.
The disassembly process of the Galaxy S9+ is quite different from the previous year’s Galaxy S8 models. One notable change is the ability to heat up the back panel and gently peel off the glass cover. Additionally, the rear fingerprint sensor plays a role in positioning internal components, similar to earlier models. Like most high-end smartphones, the Galaxy S9+ features a C-shaped motherboard paired with a long battery, which offers a compact and efficient design.
On the motherboard, you’ll find Samsung’s LPDDR4X 4GB RAM (marked in red), followed by the Qualcomm Snapdragon 845 processor. Next to it is a Toshiba 64GB UFS flash memory (in orange), along with the Qualcomm Aqstic WCD9341 audio chip (green). There are also several power management chips, audio amplifiers, and components for Wi-Fi and network connectivity located on the back of the board.
In traditional cameras, lenses use six blades to adjust the aperture size, creating a circular opening. The Galaxy S9+ uses a similar principle but with only two rotating blades, limiting the aperture to just two settings—F/1.5 and F/2.4. This simplifies the mechanism but still delivers impressive image quality under various lighting conditions.
The Galaxy S9+ also features a longer telephoto lens compared to the S9 model. The dual-camera system is housed on a single PCB, using the same interface and including DRAM for ultra-slow-motion recording at 960 fps. This makes the camera more versatile for creative photography and video capture.
Despite the modular design, iFixit gave the Galaxy S9+ a repairability score of only 4 out of 10. While each component is separate, the screen and back glass are particularly fragile during disassembly, making repairs challenging and increasing the risk of damage during maintenance. This highlights the trade-off between advanced features and ease of repair in modern smartphones.
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