How long will Apple's mobile phone battery be 80% healthy?

Two to three years. According to Zhongguancun's inquiry, iPhone is a consumable, and its battery life is about 2 to 3 years. After this time, the battery will be worn to varying degrees, and the actual capacity will be less than the initial capacity, resulting in the battery life can not meet the daily normal use. IPhone is a series of mobile phones with iOS operating system released by Apple.