After years of using Qualcomm's chipset, Apple started using Intel-made chipsets on the iPhone 7 and 7 Plus. On the iPhone 8, Apple re-use the processors of the two chip-making companies.
Apple actually still has time to improve its relationship with Qualcomm. They still have about 3 months to decide if they want to replace the chipset supplier for iPhone released next year.
Meanwhile, Qualcomm said that their homemade modems for next-generation iPhone have been fully tested and given to Apple.
They added that they are committed to supporting Apple's latest device. Unfortunately, Qualcomm's words do not match their actions.
The legal battle between Apple and Qualcomm began to heat up since early 2017. At that time, Apple demanded Qualcomm by claiming that Qualcomm offers an unfairly licensed royalty system.