From the first one:

> To mitigate these issues, external contacts may typically include a corrosion-resistant coating to the exposed exterior surface… Although temporarily effective, such coatings are subject to frictional wear and may become less effective over the life of a device.

Frictional wear is not a huge problem in practice.

There’re billions of devices with built-in batteries in the world. I’ve been carrying a cell phone, and later sometimes other electronics, since 1999. Never encounter such issues.

Most manufacturers use gold plating, and they advertise reliability for 10000 mating cycles:

https://gct.co/usb-connector https://www.gradconn.com/Products/MicroUSB https://www.molex.com/molex/products/datasheet.jsp?part=acti...

This is the point I'd have made if I had more patience. It is simply ridiculous to claim that galvanic corrosion and/or electromigration is likely to be a problem on a square millimeter gold contact with a few microns of metal that passes at most 15W continuously for a few years before being discarded.

It's bullshit because it isn't a real issue. Apple is just acting as a patent troll, inventing fake problems for the sake of filing patents.

... what? You're a metallurgist, or do you just play one on TV?

You also obviously don't understand what a 'patent troll' is.

I play one on TV.