If you have a iPhone for at least a year, then there is the possibility of having noticed at some point that the performance is not so good anymore, even if you have not installed the latest version of iOS. Theoretically, the performance should be as good as on the first day with the initial version of iOS that the phone came with, even if it has been updated with minor updates.
In reality, the Apple company acts differently and it seems that it reduces the performance of iPhone phones depending on the energy that the battery can provide, even when Low Power Mode is disabled. A large number of customers have begun to notice the fact that old batteries in iPhone phones affect performance because they can no longer provide the same power for the processor and other components.
It all started last year, when in an attempt to solve the problem of iPhones shutting down from the cold, Apple made another change with a much bigger and more negative impact. Apple started to replace the batteries of iPhone 6S phones that shut down from the cold, but the number of affected customers was so high that the company decided to do something else.
iPhone – How much are battery performance affected?
Starting with iOS 10.2, it introduced a system for monitoring energy consumption by components, this being the first step towards the implementation of another much more disturbing change. In iOS 10.2.1, Apple implemented a patch that reduces the performance of the iPhone processor depending on the battery voltage, so old batteries, with many charge cycles and lower capacity, will also generate reduced performance for phones.
"My iPhone 6S has been very slow these past few weeks. Then I used my brother's iPhone 6 Plus and his was... faster than mine? Wear level was somewhere around 20% on my old battery. I did a Geekbench score, and found I was getting 1466 Single and 2512 Multi. This did not change whether I had low power mode on or off. after changing my battery, I did another test to check if it was just a placebo. Nope. 2526 Single and 4456 Multi.”
Apple customers started to realize the problem when they started to change their old batteries with new ones and the phones became, as if by a miracle, much faster than before. The number of those who have gone through this process is large, and Apple is not the first to use this kind of strategy, because it does the same with old Macs that have batteries that no longer store as much energy.
Basically, in order not to replace the batteries of iPhone 6S phones that shut down in the cold, i.e. all the ones sold, Apple solved the problem in its own style, and reduced performance, according to those who discovered the strategy. To be completely honest, I wouldn't dare to contradict the theory, because Apple does the same with Macs and reduces iPhone performance with every major iOS update anyway.
If you have an old battery, you can also check at what frequency the processor in the iPhone works, this should be lower than the normal one for the chip in the phone. You can use the application CpuDasherX to check the working frequency of the processor and if it is lower than normal for the processor, then you should replace your phone's battery.
Have you noticed this problem?
