https://us.community.samsung.com/t5/Galaxy-S22/SIM-Card-Showing-Unknown-in-both-SIM-manager-and-About-Phone/m-p/2791669#M78237 Are you using a travel SIM (Ubigi, Airalo, etc.)? That could be the culprit. Mon, 29 Jan 2024 00:18:12 GMT KiwiBird97 2024-01-29T00:18:12Z