We have also tried with a Nimbelink Sim from Verizon and I am attaching the logs from the quectel-CM application. Kindly confirm if the source code from the URL https://github.com/sensiki/quectel-cm is the latest and correct code for the application
root@debian:~/quectel/quectel-cm-master# ./quectel-CM -s NIMBLINK.GW12.VZWENTP
[01-07_21:47:02:834] WCDMA<E_QConnectManager_Linux&Android_V1.1.34
[01-07_21:47:02:834] ./quectel-CM profile[1] = NIMBLINK.GW12.VZWENTP///0, pincode = (null)
[01-07_21:47:02:835] Find /sys/bus/usb/devices/1-4 idVendor=2c7c idProduct=0125
[01-07_21:47:02:835] Find /sys/bus/usb/devices/1-4:1.4/net/wwp0s21u4i4
[01-07_21:47:02:835] Find usbnet_adapter = wwp0s21u4i4
[01-07_21:47:02:835] Find /sys/bus/usb/devices/1-4:1.4/usbmisc/cdc-wdm0
[01-07_21:47:02:835] Find qmichannel = /dev/cdc-wdm0
[01-07_21:47:02:841] /proc/730/fd/7 -> /dev/cdc-wdm0
[01-07_21:47:02:841] /proc/730/exe -> /usr/lib/libqmi/qmi-proxy
[01-07_21:47:04:847] cdc_wdm_fd = 7
[01-07_21:47:04:953] Get clientWDS = 17
[01-07_21:47:04:985] Get clientDMS = 2
[01-07_21:47:05:017] Get clientNAS = 3
[01-07_21:47:05:049] Get clientUIM = 2
[01-07_21:47:05:082] Get clientWDA = 1
[01-07_21:47:05:113] requestBaseBandVersion EC25AFFAR07A08M4G
[01-07_21:47:05:209] requestGetSIMStatus SIMStatus: SIM_READY
[01-07_21:47:05:209] requestSetProfile[1] NIMBLINK.GW12.VZWENTP///0
[01-07_21:47:05:273] requestGetProfile[1] NIMBLINK.GW12.VZWENTP///0
[01-07_21:47:05:305] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:47:05:337] requestQueryDataCall IPv4ConnectionStatus: DISCONNECTED
[01-07_21:47:05:401] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:47:10:457] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:47:15:513] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:47:20:569] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:47:25:625] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:47:26:329] requestRegistrationState2 MCC: 313, MNC: 100, PS: Detached, DataCap: UNKNOW
[01-07_21:47:30:681] requestRegistrationState2 MCC: 313, MNC: 100, PS: Detached, DataCap: UNKNOW
[01-07_21:47:35:737] requestRegistrationState2 MCC: 313, MNC: 100, PS: Detached, DataCap: UNKNOW
[01-07_21:47:40:793] requestRegistrationState2 MCC: 313, MNC: 100, PS: Detached, DataCap: UNKNOW
[01-07_21:47:45:849] requestRegistrationState2 MCC: 313, MNC: 100, PS: Detached, DataCap: UNKNOW
[01-07_21:47:50:905] requestRegistrationState2 MCC: 313, MNC: 100, PS: Detached, DataCap: UNKNOW
[01-07_21:47:50:905] requestSetOperatingMode(1)
[01-07_21:47:50:938] requestSetOperatingMode(0)
[01-07_21:47:51:289] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:47:56:313] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:47:57:691] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:01:370] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:06:425] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:11:481] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:16:538] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:21:593] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:26:649] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:31:705] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:36:761] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:36:762] requestSetOperatingMode(1)
[01-07_21:48:36:794] requestSetOperatingMode(0)
[01-07_21:48:37:114] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:48:37:626] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:42:138] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:47:194] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:52:250] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:48:57:306] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:02:362] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:07:419] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:12:474] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:17:530] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:19:866] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:22:586] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:22:586] requestSetOperatingMode(1)
[01-07_21:49:22:619] requestSetOperatingMode(0)
[01-07_21:49:22:939] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:49:23:386] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:27:962] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:33:018] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:38:074] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:43:130] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:48:187] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:53:243] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:49:58:299] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:03:355] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:05:627] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:08:411] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:08:411] requestSetOperatingMode(1)
[01-07_21:50:08:443] requestSetOperatingMode(0)
[01-07_21:50:08:795] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:50:09:307] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:13:819] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:18:875] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:23:931] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:28:987] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:34:043] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:39:099] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:44:155] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:49:211] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:51:548] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:54:268] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:54:268] requestSetOperatingMode(1)
[01-07_21:50:54:299] requestSetOperatingMode(0)
[01-07_21:50:54:619] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:50:55:228] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:50:59:644] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:04:699] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:09:756] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:14:812] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:19:869] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:24:924] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:29:980] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:35:036] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:37:501] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:40:092] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:40:092] requestSetOperatingMode(1)
[01-07_21:51:40:124] requestSetOperatingMode(0)
[01-07_21:51:40:444] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:51:40:989] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:45:469] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:50:524] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:51:55:580] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:00:636] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:05:692] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:10:748] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:15:804] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:20:860] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:23:229] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:25:917] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:30:973] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:30:973] requestSetOperatingMode(1)
[01-07_21:52:31:005] requestSetOperatingMode(0)
[01-07_21:52:31:325] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:52:31:869] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:36:349] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:41:405] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:46:461] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:51:517] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:52:56:573] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:01:629] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:06:685] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:11:741] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:14:109] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:16:797] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:16:797] requestSetOperatingMode(1)
[01-07_21:53:16:829] requestSetOperatingMode(0)
[01-07_21:53:17:149] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:53:18:269] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:22:174] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:27:230] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:32:286] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:37:342] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:42:398] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:47:454] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:52:510] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:53:57:566] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:00:574] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:02:622] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:02:622] requestSetOperatingMode(1)
[01-07_21:54:02:654] requestSetOperatingMode(0)
[01-07_21:54:02:974] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:54:03:390] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:07:999] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:13:054] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:18:110] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:23:166] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:28:223] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:33:279] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:38:334] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:43:390] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:45:726] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:48:446] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:48:446] requestSetOperatingMode(1)
[01-07_21:54:48:479] requestSetOperatingMode(0)
[01-07_21:54:48:799] requestRegistrationState2 MCC: 0, MNC: 0, PS: Detached, DataCap: UNKNOW
[01-07_21:54:49:470] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:53:822] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
[01-07_21:54:58:879] requestRegistrationState2 MCC: 311, MNC: 480, PS: Detached, DataCap: UNKNOW
^C[01-07_21:54:59:839] QmiWwanThread exit
Please note that while the utility was attempting to register on the network, I kept getting the following messages on the /dev/ttyUSB2 serial terminal.
AT+CSQ
+CSQ: 15,99
OK
OK
+CREG: 0
+QIND: SMS DONE
+QIND: SMS DONE
+CREG: 2
+CREG: 0
+QIND: SMS DONE
+CREG: 2
+QIND: SMS DONE
AT
OK
AT+CREG?
+CREG: 1,2
OK
+QIND: SMS DONE
+QIND: SMS DONE
Please let us know if there are any special steps to register a Nimbelink sim from Verizon with the EC25-AF. We also tested the EC25-AF with a sim card which we are using in our regular phones but it was still not able to register