The function, housed in Settings > Battery > Battery Health & Charging, includes your handset's Maximum Capacity, or measure relative to when the power cell was new. Apple considers a
iPhone Battery Service. We can replace your iPhone battery for a service fee. Our warranty doesnβt cover batteries that wear down from normal use. Your iPhone is eligible for a battery replacement at no additional cost if you have AppleCare+ and your product's battery holds less than 80 percent of its original capacity.