I've done exactly that with my iPhone 14 Pro. Battery was degraded down to 72%, iOS suggested in the Settings app to get the battery replaced either at an Apple

I've done exactly that with my iPhone 14 Pro. Battery was degraded down to 72%, iOS suggested in the Settings app to get the battery replaced either at an Apple Store or at an authorized service center. I made an appointment at the Apple Genius Bar and took care of it in a little over an hour for $99. A lot cheaper than buying a brand new phone!