Your posts aren't really that clear.
What exactly is/isn't working?
Do you have a connection to the 48 network - i.e. signal bars?
If not then if you do a manual search for networks can you see and connect to the 48 network?
If not then what happens?
Any error messages?
If you do have a connection to the 48 network then...
Is anything working?
Incoming/outgoing calls, incoming/outgoing texts, mobile data?
If mobile data isn't working then did you ever configure your APN settings?
See here:
If you're on Android then you can text "APN" to 50048 and follow the instructions here to configure your settings:
If you still can't get things working and need to contact 48 support for further assistance then see the links in my signature below.
