AT&T Sim card stopped working on Amarok

[crholliday]

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?

[alzhao]

Can you try this one

AT&T (ATT) network fix

Please note this post is 2020 and the info is old. Not need to do this in 2021 I have received feedback from users that ATT cannot be used. You can try the following steps. Step 1: Enter the AT instruction page and execute the command AT+QPRTPARA=3 [1] [ROXZU%DNUW(9{MDS_9%EMY0] Step 2: Confirm the modem version and execute the corresponding instruction For version R05, execute at+qfopen="../../usr/fota_ip_a/update_report.ur",1 For version R07, execute at+qfopen="../../data/fota_ip_a/up…

[crholliday]

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

[alzhao]

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

[crholliday]

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

Thanks!