The full details of the suit can be read in a 139-page document (PDF) released by Qualcomm, but the company has five key complaints — including the claim that Apple deliberately didn't use the full potential of Qualcomm chips in iPhone 7 phones so that they wouldn't perform better than the modems provided by Intel.

Qualcomm says that Apple "chose not to utilize certain high-performance features of the Qualcomm chipsets for the iPhone 7 (preventing consumers from enjoying the full extent of Qualcomm's innovation)," and when Qualcomm iPhones supposedly outperformed Intel iPhones, "Apple falsely claimed that there was 'no discernible difference' between" the two variants.

The company also says that Apple prevented it from revealing to customers "the extent to which iPhones with Qualcomm's chipsets outperformed iPhones with Intel's chipsets." As part of its five core arguments, Qualcomm says Apple "threatened" it to keep quiet about the differences between Intel and Qualcomm iPhones, preventing Qualcomm from "making any public comparisons about the superior performance of the Qualcomm-powered iPhones."