yesterday
yesterday
What exactly do you mean by "Sim not working"?
What exactly are the symptoms of the problem?
Any error messages on the phone?
What exactly is/isn't working?
Connection to the 48 network - i.e. signal bars?
Incoming/outgoing calls?
Incoming/outgoing texts?
Mobile data?
Du you know anyone else nearby on 48 to check what their experience is?
Can you try your SIM in another unlocked phone to see if it works there?
What make and model of phone is yours?
If you need to contact 48 support about this then see the links in my signature below.