On an iPad that can handle a SIM or eSIM and on iPhones with the capability of a SIM/eSIM or dual eSIM option, Apple made a ...
The iPhone 17 Slim won't have a SIM card tray because it is too thin to have one, and it probably won't have mmWave either.
It was followed by a mini-SIM or 2FF (2nd Form Factor), which has the same thickness but is 25 mm long by 15 mm wide, with one of its corners cut to prevent misinsertion. Next came micro-SIM or ...