13-01-2023 03:46 PM
13-01-2023 06:14 PM
See here
https://community.48.ie/t5/The-Knowledgebase/Getting-Started-Move-Your-Number/ta-p/53100
If your old network SIM has no service or you cant receive the security code SMS then you'll need to make contact with your old provider as they'll have visibility of your old account.