It was a sunny Saturday morning in 2016, a time when the iPhone 6 was still a relatively new device for many users. Among them was Alex, an enthusiastic iPhone user who had always been curious about exploring the depths of his device. Alex was running iOS 9.3.5, which was one of the last incremental updates to iOS 9. He was aware that iOS 10 was on the horizon, but his device wasn't compatible with the newer operating systems that Apple had started to roll out.