Apple this week released iOS 12.5.8, a surprise update for the iPhone 5s and iPhone 6 – devices that launched in 2013 and 2014, respectively. It's the first software these aging devices have received ...

Though routine support for these models ended years ago, Apple's update is meant to preserve the cryptographic system that keeps older devices securely linked to its services.

Start with simple checks like moisture and cases before moving into system resets ...