In the backdrop of Qualcomm's earnings call for this quarter, the company stated that Apple intends to use only Intel modems in the coming iPhone release and thus, Qualcomm will not be supplying modems for the next iPhone. It remains to be seen if Intel would be the preferred supplier or Apple would be looking at alternatives such as MediaTek.
https://www.notebookcheck.net/Qualcomm-might-not-supply-modems-for-upcoming-iPhones.318366.0.html