I lost my phone. Got new sim and want to move old number to

[dalyer]

You shouldn't have got a new SIM, you should have ordered a replacement SIM:

• https://community.48.ie/t5/The-Knowledge-Base/Do-You-Need-a-New-SIM/ta-p/8487

Don't activate the new SIM. 

Contact 48 support to see if they can assist with using this new SIM as a replacement instead.

To contact 48 support see the links in my signature below.