4G Module IMEI | Open Vehicles

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11 April, 2023 - 05:13

samsleaf

4G Module IMEI

Currently running MODEM SIM7600 with Tmobile sim card, its register on the network but no data, I checked APN several times and all is good cant established PPP

Is there anyway I can manually set IMEI of the SIM7600 modem, i believe this is likely the issue why it cant get data on Tmobile network?

Your help is highly appreciated

Thanks

11 April, 2023 - 05:21

samsleaf

This the status of the modem

Cellular Modem

MODEM Status

Model: SIM7600

Network Registration: RegisteredHome

Provider: T-Mobile

Signal: -89 dBm

Mode: LTE,Online

State: NetHold

Mux: Status up

PPP: Not running

GPS: Connected on channel: #1

Also is there a way I can send regular txt to that sim card/cell # for commands? or status? if so how to enable this and where to add the admin cell phone in which it would respond back to it? Thanks

11 April, 2023 - 06:54

markwj

The IMEI is a part of the

The IMEI is a part of the modem device itself, and I don't think it should be changed.

That said, supposedly the AT command "AT+SIMEI=xxx" command will change the IMEI. Never done it, so not sure if it is persistent. I suggest writing down the existing IMEI number before messing with change it.

More likely the SIM card is not registered or activated for data service, or the APN/user/pass is incorrect, or some other compatibility issue.

11 April, 2023 - 13:09

samsleaf

@markwj

I appreciate your help on this, do you happen to know what command I need to type in shell to know the current modem IMEI? I have it installed in the car in a hidden area would take me couple of hours to get it out trying to avoid that if this can be retrieved from the shell

Thanks

11 April, 2023 - 14:03

toug31

@samsleaf

I would say to try the sim card on a phone and see if data is activated. If you know how to send AT commands to modem. I am interested. I'm new using OVMS.

If you know how to send AT commands, you can try to check some ones:

AT+CGDCONT?

should return something like:

+CGDCONT:1, <Tmobile internet apn>

you can also try AT+CGACT?;

should return +CGACT:1,1 meaning that apn context 1 is activated.

if it returns +CGACT:1,0 it means that modem internet apn is not activated.

In any cases, you can send me the returns of the AT commands. I can help you on understanding the values. These AT commands are part of the 3GPP standard.

11 April, 2023 - 18:29

toug31

Here are the commands on my

Here are the commands on my OVMS module

OVMS#cellular cmd AT+CGDCONT?

+CGDCONT: 1,"IP","sl2sfr","0.0.0.0",0,0,0,0

OVMS#cellular cmd AT+CGACT?

+CGACT: 1,1