Qualcomm is a customer for IFS: https://www.anandtech.com/show/16846/intels-first-highprofile-ifs-fab-customer-qualcomm-jumps-on-board-for-20a-process https://w

Qualcomm is a customer for IFS: https://www.anandtech.com/show/16846/intels-first-highprofile-ifs-fab-customer-qualcomm-jumps-on-board-for-20a-process https://www.anandtech.com/show/16846/intels-first-highprofil... Samsung has their own fabs, and I suspect Apple will manufacture with whoever has the most advanced process (so, TSMC for the next couple years at least).