nRF9160 LTE-M, SMS problems

RE: nRF9160 LTE-M, SMS problems

Heidi — Tue, 24 Aug 2021 12:20:43 GMT

Hi! Both traces are empty. Make sure that the size of the trace increases in the Trace Collector app as you are running the application. Additionally, if you are running a custom application, make sure UART1 isn't being used by something else.

RE: nRF9160 LTE-M, SMS problems

Babarskas — Fri, 20 Aug 2021 11:59:32 GMT

devzone.nordicsemi.com/.../trace_2D00_2021_2D00_08_2D00_20T11_2D00_45_2D00_07.061Z.binI made trace collector with asset tracker example also maybe this will give you more information.

RE: nRF9160 LTE-M, SMS problems

Babarskas — Thu, 19 Aug 2021 14:05:40 GMT

devzone.nordicsemi.com/.../trace_2D00_2021_2D00_08_2D00_19T12_2D00_35_2D00_24.478Z.bin

Hope you will find something.

RE: nRF9160 LTE-M, SMS problems

Heidi — Thu, 19 Aug 2021 11:47:37 GMT

Hi, I will need more information to know why the device isn't able to connect to LTE-M.

Please take a modem trace using the Trace Collector application in nRF Connect for Desktop while the device is trying to connect to a network and I will be able to see why it isn't able to. Make sure to enable the config CONFIG_NRF_MODEM_LIB_TRACE_ENABLED in your application before taking the trace.

RE: nRF9160 LTE-M, SMS problems

Babarskas — Thu, 19 Aug 2021 08:52:04 GMT

Hello, no I didn't try to take a new log because I can't connect to LTE-M network. nRF9160 searches network for a while and then grays out and that is it. Do you have any tips how to connect to LTE-M? And why can't I get my phone number when I use CNUM command I always get failed: phone failure.

RE: nRF9160 LTE-M, SMS problems

Heidi — Thu, 19 Aug 2021 08:23:02 GMT

Hi! Were you able to take a new log?

RE: nRF9160 LTE-M, SMS problems

Heidi — Tue, 03 Aug 2021 10:59:15 GMT

Hi,

Strangely, we can't find any SMS or AT-related traces for this issue in the log you provided.

1) Please make sure to run +CNMI before trying +CMGS, to register SMS client for AT.

2) Take a new log if you are still having issues.

RE: nRF9160 LTE-M, SMS problems

Babarskas — Mon, 26 Jul 2021 13:23:39 GMT

Yes i used it with different manufacturer gsm/gnss module and everything works fine.

RE: nRF9160 LTE-M, SMS problems

Heidi — Mon, 26 Jul 2021 10:36:49 GMT

Yes, you can't use this file as the tool to convert it into something readable isn't public.

I will have the modem team take a look at this trace.

Are you sure that the SIM card you're using is associated with a physical number?

RE: nRF9160 LTE-M, SMS problems

Babarskas — Thu, 15 Jul 2021 06:32:24 GMT

Sorry for late response but i am currently on vacation. However i tried your suggestion but result is still the same so I am sending Trace Collector .bin file to you. Am i correct to asume that i can't use this file for my own debuging because when i open it, text is unreadable.devzone.nordicsemi.com/.../trace_2D00_2021_2D00_07_2D00_15T06_2D00_27_2D00_05.617Z.bin

RE: nRF9160 LTE-M, SMS problems

Heidi — Tue, 06 Jul 2021 15:12:21 GMT

Hi!

You're getting +CME error 0 (phone failure) from +CNUM and +CSM error 301 (SMS service of ME reserved) from +CMGS.

I see you're connected to an NB-IoT cell.

Have you tried %XSYSTEMMODE=1,1,0,1, i.e specifying that LTE-M is your preferred connection protocol?

If you are able to take a modem trace that would help us get to the root of the issue.

Best regards,

Heidi