Is there an implication here that they could get into an iPhone with lower security settings enabled? There's Advanced Data Protection, which E2EEs more of your data in iCloud. There's the FaceID unlock state, which US law enforcement can compel you to unlock; but penta-click the power button and you go into PIN unlock state, which they cannot compel you to unlock.

My understanding of Lockdown Mode was that it babyifies the device to reduce the attack surface against unknown zero-days. Does the government saying that Lockdown Mode barred them from entering imply that they've got an unknown zero-day that would work in the PIN-unlock state, but not Lockdown Mode?