Had they known they could have improved their phones' performance by replacing the batteries, they would not have spent more to buy the new phones, the lawsuit says.
For years conspiracy theorists kept saying that Apple deliberately slowed down older iPhones with iOS updates in order to sell droves of new models. The first lawsuit was filed by Stefan Bogdanovich and Dakota Speas, both of which own an iPhone 7.
Consumers who have had their iPhones throttled can regain higher levels of performance by replacing their battery, which costs up to £79 - far less than upgrading to a newer model.
They argue Apple installed a new feature to throttle old iPhones without the owners' permission. Both of them also pressed on the fact that they bring users were not asked for consent to have their devices slowed down.
Perhaps in recent years you noticed your iPhone slowing down as it got older, especially when the battery was running low. This is what is known as a California and Nationwide class action certification.
Apple had previously acknowledged battery problems in some iPhone 6s devices that meant the phones would suddenly shut down and offered to replace batteries affected by the issue. A case that would eventually lead to the phone shutting off without warning. iOS 10.2.1 was created to reduce power consumption and smooth out the power draw spikes to prevent this from happening.
"Our goal is to deliver the best experience for customers, which includes overall performance and prolonging the life of their devices", Apple told CNBC. The company says as iPhone batteries age, or in certain conditions such as cold weather, the devices can struggle with demands for more power.
In a statement this afternoon, Apple explained that this "feature" was first implemented with the iPhone 6, iPhone 6s, and iPhone SE past year and most recently came to the iPhone 7 with iOS 11.2. It even said, the latest iOS 11.1.2 update adds this function to last years iPhone 7.
Apple is trying to explain that some of the older iPhone models are not able to supply enough battery juice when the processor hits the peak and this will eventually lead to a shutdown. The issue was that aging batteries couldn't handle the power spikes for some processor-intensive actions, so those were spread out across more processor cycles.
The reason Apple gave is technically right but they should have communicated to its users before.