Xiaomi officially announced the arrival of the new Mi 4i smartphone in Malaysia yesterday. After the event, selected members of the media were invited to a unique teardown session with Donovan Sung, Xiaomi Global’s Director of Product Management. Xiaomi is especially proud of the Mi 4i’s construction and in the efficiency of its design, and the company was keen to show us what’s underneath the polycarbonate unibody.
The Mi 4i uses two printed circuit boards (PCBs), located at the top and bottom of the device. They’re connected by two strips of connectivity cables, which Xiaomi says is a lot more efficient in design.
The Mi 4i uses a dual-sided PCB, allowing the board’s physical size to be significantly smaller, allowing Xiaomi to fit in a battery that’s as thick as the device itself. (Not pictured: the 13MP Sony IMX 214 camera module – it’s located at the top right of the PCB above, where the square gap is.)
Next, Sung shows off the Mi 4i’s display panel. Using an one-glass solution (OGS) panel, what you see above is the Corning protective glass, digitizer and LCD all in one exceptionally thin strip of glass.