17-09-2022 07:32 PM
17-09-2022 08:38 PM
Is "SIM not registered" the full verbatim error message or is it something else?
Does the phone let you do a manual search for networks?
If so, can you find and connect to 48?
Is the phone unlocked for use on any network?
18-09-2022 08:34 PM
18-09-2022 08:36 PM
19-09-2022 12:16 AM
You'll probably have to contact 48 support about this.
See the link in my signature below or email them at support@48months.zendesk.com
You might also want to try ordering a new SIM just to see if that makes any difference.
https://community.48.ie/t5/The-Knowledgebase/You-need-a-new-SIM/ta-p/8487