Due to reports of iPhones shutting off with around 30% battery life, Apple released iOS 10.2.1 which throttled the CPU performance of devices with a battery in poor health.
While there had been anecdotal evidence that iPhones and other Apple products appeared to slow down just before a new launch, this was not taken seriously until hard data was posted on Reddit. In response Apple issued a short letter explaining the situation. On 28 December 2017 they announced that the cost of replacing an out of warranty battery would be reduced from $79 to $29.
- "Apple's apology for Batterygate didn't go far enough". usatoday.com.
- Balakrishnan, Josh Lipton, Anita (28 December 2017). "Apple apologizes for iPhone slowdowns and offers $29 battery replacements". cnbc.com.
- Tung, Liam. "iPhone throttling: Class actions pile up as Apple hit with 32nd lawsuit - ZDNet". zdnet.com.