Well, if the iOS 13.3. 1 battery of Apple's mobile phone is healthy, it is basically equivalent to the battery health that he officially made. If you have basically tested the wear rate of your battery, it's almost the same. If the battery loss is too high, it is recommended to go to the after-sales repair shop to replace a battery. Basically, it's nothing serious, just one hundred dollars.
If you have any other questions, you can call Apple Customer Service and find out what the specific situation is. You can also ask if the battery loss rate is accurate. Can help you solve the problem. It doesn't matter.