Are you, your carrier and your phone's maker to sort out.
Frankly this is likely why I see no phones of this make around here. The maker has to do a lot better to get sales here.
I need to know how to stop the sim activation notification on my Xiaomi Mi 9T.
I did this tutorial (https://mobizoo.com.br/tutoriais/ativacao-sim-xiaomi/), but when i reset my phone, the problem come back.