Has this happened to anyone else after an update? I have the s20 plus and after the update yesterday it showed that and wouldn't go away i called tmobile and they said they never seen this before even a samsung rep said they couldn't help me no one knew what it was. I took the sim out and put it back in same error so I finally restarted my phone since samsung nor tmobile knew what to do and it fixed it. I just hope this doesn't happen with another update or with every update.