The tech giant has faced the allegation from as many as 33 US states, which claim Apple deliberately slowed down its handsets in order to encourage users into buying new devices.
In 2016, millions of people who used the iPhone 6 and 7 and SE handsets were affected by the issue, which was subsequently labelled batterygate. Apple refused to comment on the matter at the time.
But previously, the company explained that the phones were slowed down in order to preserve their battery life. The company has also previously denied that the situation was motivated by financial gain.
Meanwhile, a court document relating to the case written by Mark Brnovich, Arizona's Attorney General, has recently been made public.
In the document, he outlined his concerns and suggested that the move was a calculated plan on the company's part.
He explained: "Many consumers decided that the only way to get improved performance was to purchase a newer-model iPhone from Apple.
"Apple, of course, fully understood such effects on sales."
Although Apple - which is one of the world's biggest and most visible companies - has reached a settlement in the case, it has not admitted to any wrongdoing nor to breaking US law.