I didn't mean to imply official versus knock-off.

I meant the pin looks a little bit different. Kind of like how the usb host cable found on ebay has this shroud which makes the plug not fit in the port all the way (therefore "loose") and some mini usb cables don't fit well in some ports due to recessing the port.

But maybe I'm wrong in regards what is wrong with the cable I have. I do wish it was a stronger/tighter-fit connector (like a 3.5mm audio adapter for instance) than how loose the nokia 2mm plug is.

I think someone said they rigged their microusb port to charge with a bit of solder, maybe they have some developments/insight in regards to that.