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He's a troll.

iPhones don't use it. They don't use Qualcomm SOC's.

Note that TrustZone is not a Qualcomm technology, but rather an ARM technology. Apple could have gone with TrustZone in their SOC.

(But yes, he is a troll and this whole case has nothing to do with Apple).

Nit: TrustZone isn't a Qualcomm technology, but KeyMaster is Qualcomm software built on top of it (and that appears to be where this break lies).