Earlier quoted context omitted.
Most modern cameras have, for the last couple years, used NFC to quickly and easily transmit photos from the camera to the phone. From what I understand, on Android this works pretty effectively. On iOS, however, weak NFC implementation means that one must use a kind of janky WiFi transfer system. It works, but it's kind of difficult to use and not very elegant.
Are you sure it's transmitting over NFC? I thought NFC is quite a limited bandwidth connection. Maybe it's creating the initial connection over NFC and doing the actual transfer over wifi?
The clunky software camera companies ship doesn't help, of course. If I were in charge of a camera company I'd publish an API and SDK and welcome the world's many hackers to make the camera better, but alas I'm not and no one asks my opinion.