Msgs says SIM not registered

[Seashore]

Anyone else had this issue? It's definitely not the SIM or the network, I've swapped the SIM into an old phone and it works perfectly. Ive had this issue for 4 days now and cannot find a troubleshoot suggestion that works.

[lminvti]

Hi there 👋, may I ask where did you bought phone from? If it's from a private seller, or like places like Facebook marketplace it could be that your phone got blacklisted, you could also try to reset network settings by going to settings>general management> reset > reset network settings
Also you can try and contact your network provider.

[Fiona26]

I would still contact the network provider. As they may need to do something their end for the sim to work in the new phone.

[jimbob92]

I have the same issue and I find turning wifi on and off knocks the sim network off again. I done a reset all settings with sim taken out of the phone and it temporary fixes the issue for about 2 days on my samsung s24