When Apple filed lawsuits because of a decline in the performance of the old iPhone, the company promised to add the ability to disable the slowdown feature in iOS 11.3. This innovation is already being tested in the second beta version of the update, which was released the day before.
How it works?
Starting with iOS 11.3, the performance management function will be disabled by default. It is activated only after the iPhone suddenly shuts down, which can happen when the battery wears out (one of the main signs is a drop in capacity below 80%). The battery health data is displayed in a new menu: Settings> Battery> Battery Status (Beta)
Here you should pay attention to the point of peak performance. If the battery is still capable of operating under any load, a normal performance message is displayed. If the battery deteriorates, and at one point the iPhone turns off, iOS will start lowering the processor's frequency for a more stable operation of the device. But now this mode can be disabled manually.
The next time the iPhone is turned off, the function is reactivated, but the user can enter the settings and re-enable the maximum performance mode. And so to infinity, although with frequent reboots it is worthwhile to think about replacing the battery.
Automatic performance management occurs on the iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7 and iPhone 7 Plus. The release of the final version of iOS 11.3 is expected in March.
Sources: 9to5Mac , Apple