[yuvadam]

That usually requires significant soldering experience with SMT components and can possibly require soldering a BGA which is crazy hard (up to impossible) if you're not a machine.

[devy]

Yup! The technicians shown in the video said they usually have around 50 "upgrades" a day done in the shop and this techniques has been around since April 2015.

Worst comes to be worst, Huaqiangbei has tons of vendors who sell iPhone scrape parts so an accidental damage can be easily "replaced" and fixed up.

And I wouldn't be surprised if some of the technicians were Foxconn trained workers.

[samstave]

Are you in China? (This is not a criticism) your grammar sounds as though you may be Chinese.

I wonder how many people in the China tech scene read HN?

[devy]

Yes English grammar isn't my strongest suit. But no, I am stateside.

Fortunately, HN + Github are accessible free within China so I wouldn't be surprised there are significant Chinese engineers using these sites daily.

Write Sam Altman a nice email, he may just tell you the detail stats to answer your question directly ;)

[techolic]

I'm in China but I can only speak for me - I read HN everyday.

[john_reel]

Sounds like a native speaker to me.