Thanks for the invitation! First of all, you must make an appointment to change the battery after Apple&;s sale, because this is a rule set by others. The specific situation of changing the battery of Apple mobile phone depends on what model you are. The battery price of different models is definitely different. Take 6s for example! This year, due to the problem of battery life … some models meet the requirements, so if you want to change the battery, the price will be relatively cheaper, probably around 200 yuan, depending on the price given after sale. After the appointment is successful, it will take about 3-4 hours to change it for you if you are arranged to go, of course, it depends on the specific situation! Nothing is absolute! Finally, I want to say that if you want to change the battery, you can actually buy a battery yourself, and then find a master who repairs the mobile phone shop to change it for you. It is cheaper and faster to pay some manual fees. In fact, it is no different from the after-sales replacement. The after-sales replacement may not be as good as the battery you bought.