Apple's mobile phone battery health display maintenance means that the battery health is declining and needs to be replaced after reaching a certain level. The specific performance is that the battery charging times increase, the power display is inaccurate, and the low power prompt often appears, but it can actually be used normally for a longer time. Replacing the battery can solve this problem and restore the normal use of the mobile phone.
Battery health indicates maintenance, but it doesn't mean that the mobile phone will become as perfect as new after replacing the battery, but it only solves the problem of battery aging. As for the appearance and function, there will be no change.