Reuters:

On its website on Thursday, China’s state-backed ThePaper.cn cited an iPhone buyer surnamed Liu as saying his newly purchased iPhone 8 Plus arrived cracked open on Oct. 5. There was no sign of scorching or an explosion.

Liu told ThePaper he bought the handset through online marketplace of JD.com Inc. He said he did not charge the new device and returned it to the seller.

Pictures taken by Liu and displayed on ThePaper’s website showed an iPhone 8 plus split open along the side featuring the sim card holding, with the phone’s internal parts visible.

Puzzling. Just enough cases to make this more than a one-off, but does not appear to be widespread. Should be easy enough to tell if this is an issue with a specific part of the supply chain.