I don't know anything but I thought it's the opposite of that? I thought pick-and-place machines are like fancier 3D printers, and they can be bought and copied anywhere sufficiently advanced, but low-wage assembly workers are organic AGIs that require multi year culture building and prompt engineering know-hows accumulation to be able to achieve and maintain even usable yield rates and cannot be spun up overnight, especially after a workplace was once torn down.

Or am I just spoiled by apparent local regional abundance of cheap roboticists?

Seems much more likely to me that the main board of the phone is assembled in China and the battery and the case, and perhaps the screen are added in Finland. But it would be nice to know for sure.