Apple has added a "grounbreaking" new memory security feature to its new iPhone 17 lineup called Memory Integrity Enforcement (MIE),

That's not the only thing, though. The iPhone 17 comes with a newer chip that should provide stronger performance, as well as a minimum of 256GB of internal storage, twice that of the iPhone 15's cheapest variant. There are, needless to say, camera improvements too, but we'll get to those in a bit.