AP-1300 Sim Not Registered

showellff23 · 2022-12-07T22:15:13.230Z

We use the AP-1300’s for our business and I am currently trying to setup one on AT&T but I keep getting the message “SIM card cannot be registered. Please check: 1. You are using the compatible modem for your carrier; 2. Whether a specific APN or data plan is required.” Which I am used to seeing all the time but once I set the APN and do a modem reset it typically works but this time I cannot get it to do anything at all. It shipped with 3.212 firmware and I have reverted the firmware, refreshed the 3.212 firmware, tried multiple SIM cards that I know are working in other devices but this one is about to get booted right out the window. I even tried changing the IMEI’s 3 different times just incase that was the issue. Anyone with any insight on what its doing?

alzhao · 2022-12-08T10:51:03.135Z

First can you upgrade to 3.215?

Second, do you have any info about the sim card, e.g. what plan is it, does it need special apn, pin, etc?