Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

RE: Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

Rudolph Aschmoneit — Fri, 14 May 2021 15:13:27 GMT

The sims belong to an older batch, which has been deactivated due to lack of usage.
iBasis will send new Sims to me

RE: Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

iBasis Tech Support — Fri, 14 May 2021 07:01:34 GMT

Hi Rudolph, I will send you an email about this shortly.

iBasis Tech Support

RE: Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

Rudolph Aschmoneit — Wed, 12 May 2021 12:47:13 GMT

Hey Marte,

thanks for your fast Reply & Thanks for tagging iBasis Tech Support.

Here the logs I get after I send the "AT+CNEC=24" command in LTE Link Monitor:

+CEREG: 2,"40A6","024BE908",7,0,0,"11100000","11100000"
[00:00:29.285,888] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 38529288, Tracking area: 16550[0m
+CSCON: 1
[00:00:29.334,869] [0m<inf> asset_tracker: RRC mode: Connected[0m
+CNEC_ESM: 29,0
+CNEC_EMM: 19
+CEREG: 2,"40A6","024BE908",7,0,19,"11100000","11100000"
+CSCON: 0
[00:00:31.446,716] [0m<inf> asset_tracker: RRC mode: Idle[0m
+CEREG: 2,"AAB4","00791F01",7,0,19,"11100000","11100000"
[00:00:31.965,026] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 7937793, Tracking area: 43700[0m+
CSCON: 1
[00:00:32.013,977] [0m<inf> asset_tracker: RRC mode: Connected[0m
+CNEC_ESM: 29,0
+CNEC_EMM: 19
+CSCON: 0
[00:00:34.294,830] [0m<inf> asset_tracker: RRC mode: Idle[0m
+CEREG: 2,"5BF6","0088BF01",7,0,19,"11100000","11100000"
[00:00:36.007,110] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 8961793, Tracking area: 23542[0m
+CSCON: 1
[00:00:36.102,996] [0m<inf> asset_tracker: RRC mode: Connected[0m
+CNEC_ESM: 29,0
+CNEC_EMM: 19
+CSCON: 0
[00:00:38.812,561] [0m<inf> asset_tracker: RRC mode: Idle[0m
+CEREG: 2,"40A6","024BE908",7,0,19,"11100000","11100000"
[00:00:40.366,210] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 38529288, Tracking area: 16550[0m
+CSCON: 1
[00:00:40.416,168] [0m<inf> asset_tracker: RRC mode: Connected[0m
+CNEC_ESM: 29,0
+CNEC_EMM: 19
+CSCON: 0
[00:00:42.482,574] [0m<inf> asset_tracker: RRC mode: Idle[0m

I am not really sure if this gives you more details.

The only difference I see are the two

CNEC_ESM: 29,0

CNEC_EMM: 19

Statements. The second one looks like the Error you mentioned. The first one looks like an "User authentication failed" as mentioned in 3GPP TS 24.301 Table 9.9.4.4.1 for EPS session management errors codes. but I am only guessing here, I have no idea of ESM Error Codes

best Regards

Rudolph

RE: Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

Marte Myrvold — Wed, 12 May 2021 12:18:35 GMT

Hi,

From this and your log it seems to be a SIM card or subscription issue. The network registration status given by the following in your log:

CEREG: 2,"5BF6","0088BF01",7,0,19

shows that you are not registered, and you are getting EMM rejection cause value 19, which indicates that it is an ESM reject cause. The AT command "AT+CNEC=24" will activate reporting of ESM error codes. Could you try sending this AT command to one of the devices that are unable to connect to the network, in order to get more information about the reject cause?

iBasis have a DevZone account to help with customer support here, so it might be that they are able to help if the problem is with your SIM cards, so I will tag them here iBasis Tech Support. I do not see any reason why you should not be able to connect to the network if you have registered the SIM cards on nRF Cloud and you see them in your account, especially considering you are able to connect with the same devices using an older iBasis SIM card.

Best regards,

Marte

RE: Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

Rudolph Aschmoneit — Wed, 12 May 2021 09:14:19 GMT

Short Update, when I using the iBasis Sim Card from my first Thingy, everything is working well. So it seem to be an iBasis Problem. But I had registered all cards in nrfcloud. And they also have Used 0 / 10.49 Mb as there data usage status. Do you suggest to conntact iBasis directly? Or have you any thoughh's?

RE: Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

Rudolph Aschmoneit — Wed, 12 May 2021 07:42:31 GMT

Hey, I have not that much time at the moment to go into this problem. But I get following logs:

[00:00:27.608,215] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 26862086, Tracking area: 16550[0m+CSCON: 1
[00:00:27.838,500] [0m<inf> asset_tracker: RRC mode: Connected[0m+CEREG: 2,"40A6","0199E206",7,0,19+CSCON: 0
[00:00:30.004,425] [0m<inf> asset_tracker: RRC mode: Idle[0m+CEREG: 2,"5BF6","0088BF01",7
[00:00:30.967,712] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 8961793, Tracking area: 23542[0m+CSCON: 1
[00:00:31.175,628] [0m<inf> asset_tracker: RRC mode: Connected[0m+CEREG: 2,"5BF6","0088BF01",7,0,19+CSCON: 0
[00:00:33.677,551] [0m<inf> asset_tracker: RRC mode: Idle[0m+CEREG: 2,"AAB4","00791F01",7
[00:02:50.250,244] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 7937793, Tracking area: 43700[0m+CSCON: 1
[00:02:50.481,628] [0m<inf> asset_tracker: RRC mode: Connected[0m+CEREG: 2,"AAB4","00791F01",7,0,19+CSCON: 0
[00:02:52.895,477] [0m<inf> asset_tracker: RRC mode: Idle[0m+CEREG: 2,"40A6","024BE908",7
[00:02:52.978,149] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 38529288, Tracking area: 16550[0m+CSCON: 1
[00:02:53.122,558] [0m<inf> asset_tracker: RRC mode: Connected[0m+CEREG: 2,"40A6","024BE908",7,0,19+CSCON: 0
[00:02:55.319,488] [0m<inf> asset_tracker: RRC mode: Idle[0m+CEREG: 2,"5BF6","0088BF01",7
[00:02:55.698,120] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 8961793, Tracking area: 23542[0m+CSCON: 1
[00:02:55.819,671] [0m<inf> asset_tracker: RRC mode: Connected[0m+CEREG: 2,"5BF6","0088BF01",7,0,19+CSCON: 0
[00:02:58.401,611] [0m<inf> asset_tracker: RRC mode: Idle[0m+CEREG: 2,"AAB4","00791F01",7
[00:02:58.570,465] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 7937793, Tracking area: 43700[0m+CSCON: 1
[00:02:58.801,757] [0m<inf> asset_tracker: RRC mode: Connected[0m+CEREG: 2,"AAB4","00791F01",7,0,19

So it seems that the Modem changes cell approximately every 3 Seconds

I am using

Asse-Tracker:

thingy91_debug_ltem_2021-03-04_8e8c6089.hex

Modem-FW:

mfw_nrf9160_1.3.0.zip

Do you have any Idea

RE: Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

Rudolph Aschmoneit — Mon, 10 May 2021 13:51:16 GMT

Hey Marte,

thanks for your fast reply. I am using it in Germany, so LTE-M should have national coverage. I also have started with another thingy and an iBasis Sim Card in November. With this device everything was working fine. I started with this device with thingy91_fw_2020-10-30_5522ca2b ,cause this was the newest firmware at this point. With this device I also have no problems to connect with LTE Link monitor. So I will double check again if I really have doing all the steps right with the new ones.

RE: Thingy 91 asset tracker don't connect to nrf Cloud // no Logs

Marte Myrvold — Mon, 10 May 2021 13:36:01 GMT

Hi Rudolph,

If the LED on the Thingy:91 is white, then it is still trying to connect to a network, so you have not been able to establish a network connection yet. Are you certain iBasis has coverage in your area? The list over countries where there is iBasis coverage can be found here. If you are in a country where there is only NB-IoT coverage, you must make sure to flash the correct firmware to your Thingy, so that it is using NB-IoT instead of LTE-M. If there is no iBasis coverage in your country, you must contact an operator with LTE-M or NB-IoT coverage in your are for a LTE-M or NB-IoT SIM card from them.

As you are not able to get any logs, it is difficult to say more about why you are having problems. Have you checked out this guide for how to connect to the Thingy:91 using LTE Link Monitor?

Best regards,

Marte