I've not seen this mentioned anywhere. Time to remedy that.
We have a collection of about 8 iPhone/iPod USB cables. The older ones locked onto devices. The newer ones have friction locks.
All of the old ones are in great shape.
Two of the three newer ones are damaged. The cables separate from the connectors at both ends.
Clearly, something went wrong. Looks like a manufacturing defect.
I wonder if it's fixed with newer cables.