iPhones start slowing down after a year of use, and that’s way too soon
Apple intentionally slows down iPhones as they get older. I don't know how many times I heard people say this as a conspiracy theory — one that I've dismissed, chalking it up to operating system updates and more demanding apps — but it turns out, it's true. Apple really is slowing down phones as they age with use (specifically, as their battery gets worn down), apparently as a way to mitigate issues that come with reduced battery life. Evidence was uncovered by Geekbench developer John Poole this week, and Apple admitted to it this afternoon.
There is some good reason for Apple to do this. By their nature, lithium-ion batteries degrade over time, storing less and less of a charge. This happens very quickly on a device we use 24/7. So...