Apple and Qualcomm have been in a long-term legal dispute, suing each other back and forth. Here's a timeline of some of the events that took place since 2017. In January 2017, Apple sues Qualcomm for $1 billion over excessive royalties. In April 2017, Qualcomm sues Apple for making its modems look inferior to Intel's In November 2017, Qualcomm sues Apple of sharing Qualcomm's trade secrets with Intel and later tried to ban Apple from producing and selling iPhones in China. In January of this year, Qualcomm was fined 1 billion for paying Apple to use its chips over...
Source: https://www.gsmarena.com/apple_will_exclusively_use_slower_intel_modems_in_2018_iphones-news-32430.php