AT&T Sim card stopped working on Amarok

My AT&T SIM card was working until this weekend and now it no longer works. I have tried rebooting, resetting the modem and have tried the automatic setup twice (this worked before). Currently all I see is for Modem1 is Modem Name and IMEI with the Abort button highlighted. Modem 2 is working fine connected with a T-Mobile SIM.

How can I troubleshoot this?

Can you try this one

I follwed these instructions but nothing happened? Is there a way to troubleshoot this?

Please pm me and I will try to see if there is a way to debug

I think it was a problem on the carrier side. A new SIM card fixed the problem.


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