# LTE Modem v2 Registration Error

Source: https://forum.modalai.com/topic/184/lte-modem-v2-registration-error
Category: ESCs, Sensors and Accessories (https://forum.modalai.com/category/15/escs-sensors-and-accessories)
Tags: cellular
Posted: 2021-04-06 13:34:25 UTC by Arrowtec
Replies: 1 · Views: 803

## Arrowtec · 2021-04-06 13:34:25 UTC

Hey there I have problems with getting my LTE to work I use the v2 version and it seems to fail on the registration part as seen below any Ideas on how to fix that?
(It worked previously with the same configuration)
And when it worked it was like and on-off connection..

~ # systemctl status voxl-modem
● voxl-modem.service - Modem Initialization
   Loaded: loaded (/etc/systemd/system/voxl-modem.service; enabled; vendor preset: enabled)
   Active: active (running) since Thu 1970-01-01 00:00:09 UTC; 51 years 3 months ago
  Process: 2179 ExecStartPre=/bin/sleep 2 (code=exited, status=0/SUCCESS)
 Main PID: 2870 (voxl-modem-star)
   CGroup: /system.slice/voxl-modem.service
           ├─2870 /bin/bash /usr/bin/voxl-modem-start.sh
           └─4236 /usr/bin/python /usr/bin/sierra.py

Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: response: [{
Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: "registration": "searching",
Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: "plmn_mcc": 262,
Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: "plmn_mnc": 3,
Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: "plmn_description": ""
Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: }
Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: ]
Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: registration: searching
Apr 06 13:27:19 apq8096 voxl-modem-start.sh[2870]: Giving up on registration
Apr 06 13:27:52 apq8096 voxl-modem-start.sh[2870]: "Not provisioned"
Hint: Some lines were ellipsized, use -l to show in full.

## Reply by tom (ModalAI staff) · 2021-04-06 16:33:03 UTC

@Arrowtec This seems like it could be either a SIM card issue or an APN issue. Can you test the SIM card in another device such as a cellphone to confirm that it is functional? If it is, I would use `voxl-configure-modem` and confirm that you are using the correct APN in order to connect to the network.