Apple said the move was meant to reduce power demands - which can have the effect of slowing the processor - when a phone's battery is having trouble supplying the peak current that the processor demands.
However, Hadley said that he didn't think the fact that older iPhones slow down would disrupt sales of the newer iPhone 8 or iPhone X models.
The sudden shutdown problem became widespread among iPhones in late 2016, forcing Apple to issue a software fix that had the net result of slowing the phone somewhat with an old, cold or low-charged battery, the company said. The throttling affects iPhone 6, 6S, and 7 users at the moment, but it may likely affect future iPhones until further notice. While many iPhone users have experienced perceived slowdowns due to iOS updates over the years, it appears that there's now proof Apple is throttling processor speeds when a battery capacity deteriorates over time.
"Our goal is to deliver the best experience for customers, which includes overall performance and prolonging the life of their devices", Apple said in a statement, as reported by The Verge.
Apple's iPhone Slow Down Got The Company Slapped With A Huge Lawsuit
Geekbench reports that iOS 11.2.0 introduces similar throttling for low iPhone 7 low capacity batteries . Apple will replace your battery for free if your phone is under warranty, according to The Verge .
In other words, yes Apple slows old iPhones.
The company said its software updates for the iPhone 6, iPhone 6S, iPhone SE and iPhone 7 are created to "smooth out" peak power demands, prevent these surprise shutdowns and ultimately prolong the lifespan of batteries. With the recent iOS 11.2 operating upgrade, it's extending that feature to iPhone 7 and plans to add it to future products.
"So if you compare batteries to, for example, computers, the difference is really that in batteries you have to invent new materials to make them better, whereas in semiconductors, you're inherently, most of the time, using the same materials and you're just making them smaller, which is easier.""Why not just offer to replace the battery instead?"
Apple has now admitted that simple battery replacement would fix both of these issues. And because it's so gradual, progressively shorter battery life is ignored by most people, until it's time for a new iPhone. The operating system slows down your device to prevent it from shutting down, Apple says, but only in cases of cold temperature, a low battery charge or very old batteries.