2 NFC Antennas for iPhone 12

New iPhone specs are always fun to compare and analyze. On the NFC front we have a few changes in iPhone 12. NFC is now listed twice, first in the Cellular and Wireless section as “NFC with reader mode,” and again the MacSafe section as “Accessory Identification NFC.”

The keynote also shows NFC twice: once using iPhone 12 to unlock a door and again in the MagSafe section as a ‘single-turn coil NFC.’ So there we have it: the good old Apple Pay NFC antenna with embedded Secure Element for transactions where it has always been on the top of iPhone, and a new MagSafe NFC antenna for tag reading MagSafe accessories on the back that likely doesn’t need the secure element and might incorporate the NFC Forum Wireless Charging Specification. Hopefully Apple will release MagSafe developer documentation later on so we can find out. Some users wondered if the new MacSafe NFC would interfere with 3rd party card cases and using Apple Pay, but this doesn’t seem to be the case, no pun intended.

The NFC Forum Specification includes wireless charging but it’s not clear if MagSafe includes it.

What about ‘NFC with reader mode’? I suspect this is just a new name for Background NFC tag reading which was listed in previous models but not in the iPhone 12/12 Pro specs. Another welcome addition is the return of Suica (removed in the iPhone SE Apple Pay section) along with the just released Apple Pay PASMO mention in the iPhone 12 JP Apple Pay specs.