Why is there no battery health option for 5s?

As for why the 5S lacks battery health, Apple officially explained that the A7 processor used by the iPhone 5s has not been affected by the "frequency reduction event", so the battery health function is meaningless. The battery health function in Apple iOS 1 1.3 mainly has two functions. One is to check the ratio of the maximum capacity of the current battery to the design capacity; The second is that the frequency reduction strategy can be turned off manually.