Older iPhones have an unfixable security flaw - why it can't be patched and the models affected

Apple announced at WWDC that giving iPhones as old as the iPhone 11 a CPU scheduler "will make older iPhones feel even more responsive."

At the WWDC 2026 keynote, Apple detailed iOS 27 changes like a new version of Siri with a dedicated Siri app and Apple Intelligence features across multiple apps, but there are dozens of smaller but still important changes that Apple didn't have time to go through.

I've been testing iOS 27, and these 5 overlooked features make even older iPhones better

Older iPhones, particularly models using Apple A12 and A13 chipsets, are facing a significant security vulnerability known as 'usbliter8', according to a report from cybersecurity firm Paradigm Shift.

Frustrated with iOS and ready to make the switch to Android? You're not alone. See what Apple rivals are doing right that has long-time fans jumping ship.

Researchers have discovered a vulnerability with older iPhones that Apple can't patch. The team at Paradigm Shift, an independent European cybersecurity firm, published its findings on the flaw, which it calls usbliter8,