Apple confirms iPhones with older batteries will take hits in performance

While many iPhone users have experienced perceived slowdowns due to iOS updates over the years, it appears that there’s now proof Apple is throttling processor speeds when a battery capacity deteriorates over time.

“This fix will also cause users to think, 'my phone is slow so I should replace it' not, 'my phone is slow so I should replace its battery,’” says Geekbench’s John Poole.

It’s also clear that Apple, which makes its devices hard to open and repair, could do a better job helping consumers understand the benefits of battery replacement.