https://www.cnet.com/news/apple-plans-iphone-software-update-to-counter-china-ban/

The ban stemmed from alleged infringement of two Qualcomm patents. Apple says its update will address the "minor functionality" of both.

The patents are related to adjusting and reformatting the size and appearance of iPhone photos, and managing apps using a touchscreen. They only affect iOS 11, Apple told CNBC, so the newer iOS 12 software doesn't infringe on Qualcomm's patent.