12-19-2025, 01:34 PM (This post was last modified: 12-19-2025, 02:03 PM by c3drus.)
Hello! I have been trying to get LTE working via my personal SIM card but it seems stuck on 2G (Edge) constantly. The SIM card is definitely LTE/4G as i tested it on another device and it performs as expected there. However, the car mobile modem does not go beyond 2G.
I checked the VCM parameter ‘Mobile connectivity type’ where it indicates “Edge” and the connection speed is super slow while doing anything via IHU or car’s wifi hotspot. The VCM seems to be the LTE VCM (photo of a label attached) so I expect that the device itself have the needed capabilities. I also experimented with Telematics configuration setting and shifted from ‘With Telematic module’ to ‘With Telematic Module ROW LTE’ but it did not solve the problem.
Did any of you had such issue? Anyone managed to get the LTE mobile connection running on their personal SIM with similar VCMs?
Thanks for a reply! I checked the APN settings but my carrier uses one setting regardless of the type of connection and it seems to be set according to carrier requirements at the moment.
It would be interesting if there is anyone at this forum located in EU with the same VCM module and working LTE connection. We could try to compare config then perhaps.
Assuming this is the LTE frequency difference between regions, how do we control this? I mean, it has to be configurable! You don't see mobile phones 'locked' to a particular region anymore, right? Also I believe it is already possible to change operating frequency of e.g. Homelink module via config settings.
Can any of you with "EU" VCM module share "191 TELEMATIC MODULE" config setting? Mine is set as "02 With Telematic Module". But the list of options is much longer so I wonder if the EU have some specific setting there. Or maybe it is more of a one-time "service function" to "initiate LTE" or activate/deactivate, similarly to how we can change VCM Battery counter or VoC Service availability?
I guess a real showstopper would be if the VCMs are really different in terms of hardware, which supports a narrow and specific frequency type. But don't you think this would be really strange? Anyway if you guys have access to VCMs of the same year/type but meant for cars in different regions - can you examine them if they have different chips or layouts?
(01-07-2026, 03:40 PM)c3drus Wrote: I guess a real showstopper would be if the VCMs are really different in terms of hardware, which supports a narrow and specific frequency type. But don't you think this would be really strange? Anyway if you guys have access to VCMs of the same year/type but meant for cars in different regions - can you examine them if they have different chips or layouts?
This is exactly the situation - hardware is different. You need a EU VCM.
Also I believe it is already possible to change operating frequency of e.g. Homelink module via config settings.