A better picture of the board with a revision number will be possible later when I take apart my own to solder a serial interface. I have borrowed a picture from a disassembly for the time being.
It seems that companies are looking into implementing this extra sim storage for carrier data management as well as updates and or preferences. SanDisk has a document detailing some of their solutions.
As for the pinout, I am unaware of the pin assignment and if the extra two pins are the new standard being used or an extra ground. I would like to get a sim of that generation and a shield to test if its storage can be accessed as is, then pursue further methods of bypassing it to a more traditional storage chip.
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