You'll need to post a bit more information and context than that if you want assistance from the Community Forum.
What exactly do you mean by "no signal"?
You mean no connection to the 48 network - i.e. no signal bars?
When was it working ok last?
What changed in the meantime?
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?
If you need to contact 48 support about this then see the links in my signature below.
