iFixit iPhone Duo Teardown Points to Possible Cause of Screen Cracks

iFixit conducted a teardown of the iPhone Duo to assess its construction, repairability, and potential causes of screen cracks. The device boasts an IP68 dust and water resistance rating, meaning it is sealed against dust. However, during the teardown, iFixit discovered dust in the USB-C port, speaker mesh, and bezel, though minimal particles reached the device's internals. The hinge gathered less dust than the Galaxy Z Fold8 or Pixel 11 Pro Fold in similar tests, which is encouraging but not entirely dust-free.

Apple designed the nano-texture cover layer of the iPhone Duo to be easily removable for replacement, but it's not intended for user removal. With AppleCare +, replacing the cover layer costs $19, while it's $49 without the plan. The battery adhesive used in the iPhone Duo is Apple's new adhesive introduced with the iPhone 16, which loosens under a small electrical charge, facilitating battery removal. This is the best battery removal experience among foldable smartphones tested by iFixit.

The outer display is easy to detach, and iFixit praised the phone's robust construction, which aids repairability as most internal repairs require access through the outer display. However, removing the inner panel involves considerable adhesive work. Apple describes the inner display as a 10-layer stack, and iFixit could see some of these layers under a microscope. The device features an unstacked logic board, the first iPhone to do so since the iPhone 8, contributing to its slim profile.

Some reported display failures might be attributed to pressure, trapped particles, repeated bending, or manufacturing defects. The issue might not be a physical display breakage, as a wiring problem can lead to similar symptoms. The hinge design shows areas of stress clustering near the transition where the flex cable crosses to the central hinge support.

The curved rails of the hinge, which follow the screen's pivot points, could also be lifting above the flat plates during closure, exerting additional stress at that point. This theory aligns with the observed damage locations not coinciding with where the display cable passes through the hinge.