Samsung South Africa blocks SIM 1 on Galaxy S devices that installed the August security update (pushed in September 2022). This problem has been widely reported by many galaxy S users this September. We have reported the issue in communities but there is no definitive answer. All we are told is to visit Samsung service centres. This is not a hardware issue, but a deliberate software lock. Similar reports of this problem are all over the internet. Samsung knows this problem and it's not fixing it. Let's all head to Twitter and demand answers from Samsung South Africa. I will drop a link to my tweet in the comments.
Update: I have updated to the September security update. Nothing has been fixed. Samsung does not seem interested is fixing the issue. Quite disappointed that they don't care about their customers. Anyone had luck getting the solution?
Little improvements after October 2022 security patch and One UI 5.0: sometimes Vodacom is working on SIM 1, but only to make calls since it appears receiving calls is not allowed
Still experiencing this issue on a S21+; I contacted Samsung but none of their suggestions worked. I noticed that sometimes MTN is working on SIM 1 slot for minutes or hours, then it stops working
