I just recently bought the Samsung S20 ultra 5G, amazing phone, but i cannot do away with this Activate your device notification everytime the phone restarts or every 2 hours or so when it automatically tries to register. The phone came with Sprint/T-mobile apps and i do not have any of these services or service providers in my country (Zimbabwe). My SIM card was working fine initially, even with the persistent OMADM notification popping up, but after doing some routine updates, my SIM card is no longer being read by the phone, when i try and make a call or TEXT/SMS, it says :"your phone is not registered on a network, so you can only make emergency calls".
I never had any issue like this with my previous Samsung devices, i was using the A73 5G before this, What can i do to solve this issue?
