Teardown of Apple iPhone Duo highlights hinge pressure points behind early screen cracks

A teardown by repair specialist iFixit suggests mechanical stress inside the hinge may explain why some early Apple iPhone Duo buyers are experiencing cracked folding displays. Owners have reported hearing crunching sounds followed by display lines and fractures originating near the hinge. Despite these issues, iFixit awarded the device a provisional 5 out of 10 for repairability, marking its highest score for a foldable phone to date. [1][2][3]

Analyzing the hardware with CT scans and 3D modeling, iFixit found that a central support bar designed to drop when closing can fail to retract sufficiently, creating a pressure hotspot beneath the screen. Intrusive dust particles and rising curved guide rails also pose risks of physical interference. Under a microscope, Apple's efforts to disguise the screen crease were evident through an anti-reflective matte coating and uniquely oriented oval subpixels. [1][2][3]

Although the iPhone Duo carries an official IP68 rating, the hinge remains susceptible to fine particles that exacerbate internal grinding. Disassembly revealed accessible components like the outer screen and dual batteries, but the complexity and failure risk of the main folding panel mean screen replacements are likely to drive many users toward AppleCare+ coverage. [1][3]