Hello,
Purchased the GL-MIFI EC25-AF put my already active data sim for ATT from my Netgear 770S into it and fired it up. By default it was using the wrong APN so I corrected it to broadband. No matter what I do now, firmware update reboot ect. I can not connect to LTE. I have even issued the AT command to force it and I get a SIM reg. error. I take the sim out put it in my 770s and have no problem right up and right into 4g LTE even validated it in the settings. I know I have strong LTE signal, tried it in two phones moto X4’, an old Iphone, and the 770s all connect to LTE no problem. I’m at a loss at this point…