EM7305 Disconnect Issue

I have a EM7305 on a Dell Latitude E5550 running windows 7 professional, AT&T is the carrier. This device has worked great since it was installed about 4 months ago. Just over the weekend it began having issues. I have good status to connect to the AT&T profile. I click on connect and it connects and immediately disconnects.

I have contacted AT&T to verify that the IMEI and ICCID numbers are correct for the phone number associated with the laptop and Sierra LTE Card.

I have rebooted numerous times. I have not been able to get this to stay connected. AT&T does not see any issues with the account and then set up. I have no issues with WiFi connectivity when that network is available. I am also able to use my phone and have the same signal strength on the phone that shows within the Sierra Wireless launcher.

Hi ,

Can you please provide the below mentioned details for further analysis:

  1. provide exact steps
  2. Responses to below mentioned AT commands,
  3. Is the observed on any particular network service provider? Have you tried on other SIM(service provider)

Thanks and Regards,

the device is currently inaccessible by me (sales rep is traveling). I will get this information for you next week.

I have not tried another SIM as AT&T is our provider and the card worked fine prior to this past weekend. All of our other cards are working fine.

I uninstalled the Sierra program and reinstalled and it appears to be working now.