Apple is investigating reports of the iPhone 8 bursting open days after the device went on sale. At least two owners have reported that their devices have split open; one of which happened right out of the box.
The first iPhone 8 owner from Taiwan claimed that his phone began bursting at the seams as it was charging. Media reports indicate that he was using the official cable and power adapter; preventing any accusations that it could have been caused by poorly constructed third party peripherals.
One Japanese iPhone buyer reported that his phone arrived with the display already partially detached from the device. Posts on social media clearly showed the phone bulging in the middle with the screen being pushed out of position.
— まごころ (@Magokoro0511) September 24, 2017
Apple says that it is investigating the matter, and believes that the problem lies with the battery. The company thinks that something is causing the battery to swell. That said, it does not believe that there is any cause for concerns about personal safety.
It’s difficult to say if this is a sign of a wider problem. For now, the number of complaints has been minimal and it looks like there has more to do with a small handful of batteries that managed to get past QC checks. Lithium-Ion batteries are known to bulge under certain circumstances; which doesn’t make this behaviour too out of the ordinary.