"We know that some of you feel Apple has let you down."
The reasons Apple has given for its slowing of older phones - to prevent noticeable slowdowns and screen dims, mostly - are plausible but, probably because the facts were revealed by a developer rather than the company itself, criticism has been widespread.
Starting next month, anyone with an iPhone 6 or later can have its battery replaced for $29. The offer is apparently good for a year. On top of this, Apple is suggesting it will add more battery-health information to iOS.