Why did you have to get another SIM?
What do you mean by "phone won't recognise it"?
What happens?
Any error message?
Were you using the same phone with a 48 SIM previously?
Did you activate the SIM?
Was it a brand new one or a replacement for use with your existing account/number/membership etc.?
If you need to contact 48 support about this then see the links in my signature below.
