You mean that you have no connection to the 48 network at all - i.e. no signal bars?
What happens if you do a manual search for networks?
Can you see and connect to 48?
If not then what happens?
Any error messages?
Are there any error messages on the phone itself?
Did anything change on the phone before this problem occurred?
You might want to order a replacement SIM just in case your SIM has become faulty.
If you need to contact 48 support about this then see the links in my signature below.
