For years, people have complained about declining performance in their ageing iPhones, an issue that's commonly attributed to Apple's software updates. Something beyond a rumour percolated just last week, when a Reddit thread suggested that the cause for the slow performance could be due to Apple throttling phones with degraded batteries. This inspired the makers of Geekbench, a widely used synthetic benchmarking app, to give data gathered from thousands of phones using Geekbench a closer look. The data, according to Geekbench, indicates that there may actually be a link between software updates and old batteries when it comes to poor performance.