You'll need to post a bit more information than that if you want assistance from the Community Forum.
When was it working ok for you last?
Did anything change on the phone in the meantime?
E.g. phone software update, settings changes, factory reset/restore, new handset, returned from roaming abroad, etc.?
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 48?
If you do have a connection then what happens when you try to make a call?
Any error messages?
If you need to contact 48 support about this then see the links in my signature below.
