Qualcomm's upcoming high-end smartphone SoC, the Snapdragon 8 Gen 1 Plus, is rumoured to use TSMC's 4 nm process node. Its production seems to be commencing in full force, with yields of over 70%. The company is expected to unveil the chipset sometime in Q2, 2022.
https://www.notebookcheck.net/TSMC-s-4-nm-node-reportedly-working-wonders-for-the-Snapdragon-8-Gen-1-Plus-with-a-yield-rate-of-over-70.600821.0.html