Apple's mobile phone battery shows 100, and the computer shows 90. What's the matter?

Sometimes the battery health in Apple's mobile phone system is inconsistent with the health value inquired by AISI Assistant, which is also normal, because Apple's mobile phone needs to be calibrated in daily use. If there is any inconsistency, as long as the system is upgraded or factory settings are restored, the real value will be displayed, but often the two are different, and the results queried by AISI Assistant will be the main one.