Take public transportation sometime. Notice all the devices with cracked screens. Totally "anti-fragile" :). Android devices are no better, but the article is talking about Apple.
In comparison, something like an old iPod with a spinning HDD could have a storage failure from a fall.
That modern phones, not just iPhones, are these completely solid devices, packed to the brim, with no more moving pieces makes them surprisingly resilient.
They're even water and dust resistant now just as a standard. Dropping your phone in water was a death sentence a decade ago - it's whatever now.
Antifragile systems can get better from being stressed, at least to a limit. Muscles are antifragile, as one example. You stress them moderately, and you grow stronger. Stress them too much and you'll break, but within limits your muscles don't just endure the stress, they improve from it.
No physical phone is antifragile.