https://us.community.samsung.com/t5/Galaxy-S21/No-cell-service-after-UI-8-update/m-p/3417951#M97900 I am having the same issue but when It says I have no sim card my phone restarts on its own Sun, 30 Nov 2025 00:42:50 GMT AlejandroMedrano 2025-11-30T00:42:50Z