4 hours ago
4 hours ago - last edited 3 hours ago
Your post isn't really that clear.
By "old SIM" do you mean a SIM from your old provider?
Is so then you presumably want to port your number over from them to 48?
In that case see here:
In particular this:
If you mean that you lost your old 48 SIM and need a replacement with the same number then see here:
If you mean something else then you'll need to explain more clearly and in more detail what you mean if you want assistance from the Community Forum.
If you need to contact 48 support about this then see the links in my signature below.