It discovered that the iPhone 6's score for iOS 10.2.0 appears "unimodal" (that is, it doesn't change) in performance, but when it studied the iPhone 6 running iOS 10.2.1, the performance peaked around the average score and several other peaks around some of the lower scores.
In other words, yes Apple slows old iPhones.
Some users reported seeing their phone's performance more than cut in half as the device aged.
The admission played into concerns that Apple was stealthily nudging iPhone users to upgrade to newer models by letting them think it was the handsets that needed replacing and not just a matter of getting new batteries. That's why it implemented the performance limiter in iPhone 6, iPhone 6s, and iPhone SE.
The confession comes after a blog post proved older iPhones deteriorating on newer operating systems. The lithium-ion batteries are less able to respond to peaks in demand in case of cold weather, low battery charge, or aging with time, which may lead to an unexpected closure of the unit to protect electronic components.
According to the spokesperson, the company released a feature a year ago for the iPhone 6, iPhone 6s and iPhone SE that is created to "smooth out the instantaneous peaks only when needed to prevent the device from unexpectedly shutting down". (Its latest major update, iOS 11.2, does the same slowdown to an iPhone 7 with a dud battery.) But the larger problem is it leaves the impression that customers should buy a new phone when all they really need is a new battery.More news: Real Madrid reacted badly to Antoine Griezmann news after Club World Cup
However, Apple says it is done exclusively because of the old batteries.
The performance of the iPhone 7, released at the end of 2016, has also dropped following this month's iOS 11.2 update, according to The Guardian.
"Our goal is to deliver the best experience for customers, which includes overall performance and prolonging the life of their devices", a spokesperson for Apple said.
Why not design phones in a modular way, so owners could just slide in new batteries? Let us know in the comments.
The widely believed theory that the company intentionally slows down older iPhones is true.
The original Reddit threat notes the performance of an iPhone 6S. "By slowing the phone, it does help mitigate the problem of the diminishing battery". While it's possible to do your own battery replacement, it's a delicate and complicated surgery at the risk of doing seriously expensive harm to the device.