Apple and Qualcomm settled a two-year-old battle over patent licensing on Tuesday, a reconciliation that ended a trial that had started just a day earlier.
The settlement is the latest twist in a fight that could put your iPhone at risk.
The company says it's invested more than $40 billion in research and development over the past three decades, and its patent portfolio contains more than 130,000 issued patents and patent applications worldwide.
"Qualcomm's inventions are necessary for to function -- they are not limited to technologies in modem chipsets or even cell phones," Qualcomm said in a filing.
The suit came less than a month after Apple stopped paying patent royalties for Qualcomm technology that's essential for connecting phones to a wireless network.
In July 2017, those four iPhone makers joined Apple by filing a suit against Qualcomm, alleging it used its market position to charge excessive royalties.