Every now and then when I check to see if there are any updates for my phone I get a message stating that "DM initialization not ready/ check sim or network". There seems to be no issue with my phone working properly but i'm just curious if this is something I should even be concerned about. Still love my note 9 and plan on keeping it a while longer as long as it works great.
My last OTA update was in February. then nothing. After everyone else had updates I had mine updated with a factory reset by UBREAKIFIX. Then several more months go by and since then I've done 3 updates via ODIN. I've gotten that same error message many times. I think I need to talk to AT&T and see about checking/replacing the SIM.