According to a recent report published by Bloomberg, the United States Department of Justice (DOJ) and the Securities and Exchange Commission (SEC) may be currently investigating Apple’s use of a software update in slowing down the processing speed of certain old iPhone models starting late last year. The federal investigation is said to be in its initial stages, and the talk is that the US government has also proceeded to requesting information from Apple itself.
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https://www.wirefly.com/blog/news/doj-sec-reportedly-investigating-slowdown-old-iphone-models