In a press release largely devoid of details as you’d expect given the topic, Apple has announced that the iPhone and iPad are the only consumer-grade devices that comply with NATO classified data safeguard guidance.

IPhone 17 Pro Max in Orange

IPhone 17 Pro Max in Orange
The certification doesn’t allow the iPhone to either put in-motion or store at-rest any level of classified data. Specifically, the devices, properly managed, are allowed to handle classified information up to the NATO restricted level without requiring special software or settings.
Apple says that on the whole, no other consumer mobile device has met this standard.