Last year, users discovered that an iOS update resulted in their old iPhones becoming slower than before. It turned out…
Last year, users discovered that an iOS update resulted in their old iPhones becoming slower than before. It turned out that it was a deliberate iOS feature, as Apple tried to prevent unexpectedly older iPhones from shutting down under heavy loads. Blowing the processor speed, it turned out, would prevent shutdowns.
During the months that followed that discovery, Apple apologized to users, implemented a cheaper battery replacement program for iPhone and was accused of such features being part of a planned outdated strategy to convince buyers to upgrade to newer iPhones. Apple even got questions from the Congress on the issue and explained how its CPU gasification works.
In a letter to legislators, Apple explicitly noted that newer devices like the iPhone X, iPhone 8 and iPhone 8 Plus will not be affected by future slowdowns. But it turns out that it is not so.
How Apple explained the issue to Congress in early February:
The iPhone 8, iPhone 8 Plus and iPhone X models use a more advanced hardware and software design that provides a more accurate estimate of both power requirements and battery power for to maximize overall performance of the system. This enables another performance management system that more accurately allows iOS to predict and avoid an unexpected shutdown. Consequently, the effects of performance management can be less noticeable on iPhone 8, iPhone 8 Plus and iPhone X. Over time, the rechargeable batteries in all iPhone models will decrease in their capacity and top performance and eventually will need to be replaced.
Fast-scrolling to iOS 1
2.1, just released, and you see that Apple has quietly updated its iPhone battery and performance support page to include 2017 iPhones in the list first observed by The Verge – our emphasis :
Additionally, users can see if the performance management feature that manages maximum performance dynamically to prevent unexpected shutdowns on and can choose to turn it off. This feature is activated only after an unexpected shutdown occurs on a device with a battery that has a reduced ability to deliver maximum instantaneous power. This feature applies to iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7 and iPhone 7 Plus. From iOS 12.1, iPhone 8, iPhone 8 Plus and iPhone X, this feature includes this feature, but performance management may be less noticeable due to their more advanced hardware and software design.
It does not necessarily mean that if you purchased an iPhone 8 or iPhone X at the launch last year, you start experiencing interruptions anytime soon. But it may happen eventually, which is probably why Apple felt compelled to update the support page with the 2017 devices.
If that happens, at least you know that your battery has aged to the point where it does not allow iPhone to work at full speed all the time. A battery change restores performance. To learn more about battery health, proceed to the Settings Appliance Battery and then Battery Health . This is where you find the battery wear condition and if it still supports top performance.