Hello.
I have two EC25AFFA cards. One of them is not allowed to connect to Verizon (permission denied in the system log). I think this is because the firmware of that card is unsupported on Verizon. Both cards work on T-Mobile and AT&T.
The details of the two cards are as follows:
Working: EC25AFFAR07A08M4G
Not Working: EC25AFFAR07A06M4G
Syslog:
Thu Sep 29 06:09:52 2022 daemon.notice netifd: modem_1_1_2 (13826): Waiting for SIM initialization
Thu Sep 29 06:09:53 2022 daemon.notice netifd: modem_1_1_2 (13826): Waiting for network registration
Thu Sep 29 06:10:04 2022 daemon.notice netifd: modem_1_1_2 (13826): Network registration failed
Thu Sep 29 06:10:04 2022 daemon.notice netifd: modem_1_1_2 (14063): Stopping network modem_1_1_2
Thu Sep 29 06:10:04 2022 daemon.notice netifd: modem_1_1_2 (14063): Command failed: Permission denied