The US authorities are investigating Apple over possible breaches of stock market rules relating to its software update to address the slowing iPhone battery debacle.
Both the Department of Justice and the Securities Exchange Commission are reported to be studying Apple´s disclosures on the issue.
Apple has admitted to slowing iPhones with ageing batteries, though has claimed the practice was done to “prolong the life” of the devices.
However, many customers suspect Apple wanted to entice those with older smartphones to upgrade.
The latest probe is to focus on whether Apple properly followed disclosure rules in the way it responded to public angst over the issue.
Various civil lawsuits have also been filed against Apple over the scandal in the US.
After the scandal surfaced, Apple pledged to substantially lower the price of an out-of-warranty battery replacement for customers with an iPhone 6 or a later iPhone model.
“With so many older iPhones in the market the battery performance issues have become a concern for a lot of consumers. Apple has also been under regulatory scrutiny so it is likely trying to offer as many options to consumers as possible so they can decide the best way to maximise the battery life on iPhones that are eligible for the new battery programme,” says Ben Wood of technology consultancy CCS Insight.