https://www.cnet.com/news/apple-and-qualcomm-settle-heres-what-it-means-for-your-next-iphone/

The companies didn't say what prompted the change of heart. As recently as January, Apple CEO Tim Cook said the iPhone maker wasn't in talks with Qualcomm. Analysts speculated that Apple's need for 5G chips might have spurred the iPhone maker to negotiate, a view backed up by a Nikkei report that said the company had tested Qualcomm 5G chips as the companies explored a settlement. Shortly after the settlement was announced, Intel, an Apple supplier, said it was exiting the 5G phone modem business.

Neither Apple not Qualcomm commented beyond their statement.