CNN -- Apple has confirmed a rumor that some old iPhones do get slowed down due to problems with old batteries.
According to Apple, they say they slow down the iPhones because of battery problems.
The older batteries can cause iPhones to shut down without warning.
So to prevent that, the company reportedly says it has created software that manages batteries as they age.
The software reportedly only slows down devices to keep them functional, but only when needed.
Apple says that the iPhone SE, 6, 6S, and the iPhone 7 are all impacted.