I think the issues Qualcomm had at Samsung before moving to TSMC were performance and power based in addition to early yield issues. https://www.anandtech.com/

I think the issues Qualcomm had at Samsung before moving to TSMC were performance and power based in addition to early yield issues. https://www.anandtech.com/show/17395/qualcomm-announces-snapdragon-8-gen-1-moving-to-tsmc-for-more-speed-lower-power https://www.anandtech.com/show/17395/qualcomm-announces-snap... https://www.sammobile.com/news/samsung-foundry-4nm-yield-snapdragon-8-gen-1-chips-very-low/ https://www.sammobile.com/news/samsung-foundry-4nm-yield-sna...