The battery health of iPhone 1 1 is 82%, which means that its maximum battery capacity is slightly reduced, but it is still within the normal use range. How long it can last depends on many factors. Usage habits will affect battery life. Frequent use of high-performance applications or long-term use of mobile phones will accelerate battery consumption.
The use environment of the equipment will also affect the battery life. Using or charging the iPhone in a high temperature environment will cause the battery to age faster.