4 ms·

For Japan it might be the Felica chip.

• koito17 19d ago
  That would surprise me. I don't recall having to change my iPhone's region after moving to Japan. Transport IC cards in Apple Pay have "just worked". I am vaguely aware that some phone manufacturers silently remove certain NFC hardware (or disable some driver) in order to avoid paying Sony patent fees. Apple doesn't seem to do that, though.
  • robert-boehnke 19d ago
    There were iPhones with Japan-specific hardware for transit cards in the past but as of a couple years ago, all iPhones have been compatible.
    • numpad0 18d ago
      Only iPhone 7 had that limitation. 8 and later don't, and that was since like a decade ago.