nrf9151 DK LTE Registration rejected

[Muhammad]

Hi,

I need support to get my brand new nrf9151 development board LTE connection up and running.

I have bought this kit and it came with 2 SIM cards as per documentation both should be activated already. When I inter the SIM card and then with quick start use the standard code of "nRF Cloud multi-service" to connect to nrfCloud as per this video as well I tried same step. But I got the following warnings and not going any further.

*** Booting My Application v2.1.0-dev-4594a8693738 ***
*** Using nRF Connect SDK v2.8.0-a2386bfc8401 ***
*** Using Zephyr OS v3.7.99-0bc3393fb112 ***
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Image index: 0, Swap type: none
I: Bootloader chainload address offset: 0x18000
I: Jumping to the first image slot
[00:00:00.253,753] <inf> spi_nor: gd25wb256e3ir@1: 32 MiBy flash
*** Booting nRF Connect SDK v2.8.0-a2386bfc8401 ***
*** Using Zephyr OS v3.7.99-0bc3393fb112 ***
[00:00:00.261,657] <inf> main: nRF Cloud multi-service sample has started, version: 1.0.0, protocol: CoAP
[00:00:00.261,718] <inf> application: Reset reason: 0x10001
[00:00:00.261,993] <inf> cloud_connection: Enabling connectivity...
[00:00:00.521,942] <inf> nrf_modem_lib_trace: Trace thread ready
[00:00:00.529,876] <inf> nrf_modem_lib_trace: Trace level override: 2
[00:00:00.630,615] <inf> cloud_connection: Setting up nRF Cloud library...
[00:00:00.718,566] <inf> nrf_cloud_info: Device ID: 50343956-3037-4966-8043-132fc78a7d45
[00:00:00.719,177] <inf> nrf_cloud_info: IMEI:      359404230140528
[00:00:00.805,480] <inf> nrf_cloud_info: UUID:      50343956-3037-4966-8043-132fc78a7d45
[00:00:00.805,969] <inf> nrf_cloud_info: Modem FW:  mfw_nrf91x1_2.0.2
[00:00:00.805,999] <inf> nrf_cloud_info: Protocol:          CoAP
[00:00:00.806,030] <inf> nrf_cloud_info: Download protocol: CoAP
[00:00:00.806,060] <inf> nrf_cloud_info: Sec tag:           16842753
[00:00:00.806,091] <inf> nrf_cloud_info: CoAP JWT Sec tag:  16842753
[00:00:00.806,121] <inf> nrf_cloud_info: Host name:         coap.nrfcloud.com
[00:00:01.147,857] <inf> nrf_cloud_credentials: Sec Tag: 16842753; CA: Yes, Client Cert: Yes, Private Key: Yes
[00:00:01.147,918] <inf> nrf_cloud_credentials: CA Size: 1188, AWS: Likely, CoAP: Unlikely
[00:00:01.147,918] <wrn> nrf_cloud_credentials: Connection using CoAP may fail as the size of the CA cert indicates CoAP CA certificate is missing but AWS CA is present.
[00:00:01.147,949] <wrn> cloud_connection: Required root CA certificate is missing.
[00:00:14.619,079] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863810, Tracking area: 25341, LTE mode: 7
[00:00:16.551,116] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863808, Tracking area: 25341, LTE mode: 7
[00:01:40.170,654] <wrn> lte_lc: Registration rejected, EMM cause: 13, Cell ID: 464671, Tracking area: 25582, LTE mode: 9
[00:02:37.427,307] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863810, Tracking area: 25341, LTE mode: 7
[00:02:38.073,333] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863808, Tracking area: 25341, LTE mode: 7
[00:02:50.933,929] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863810, Tracking area: 25341, LTE mode: 7
[00:02:51.367,858] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863808, Tracking area: 25341, LTE mode: 7
[00:03:53.296,508] <wrn> lte_lc: Registration rejected, EMM cause: 13, Cell ID: 464671, Tracking area: 25582, LTE mode: 9
[00:06:47.629,302] <wrn> lte_lc: Registration rejected, EMM cause: 15, Cell ID: 26322297, Tracking area: 16551, LTE mode: 9
[00:08:33.695,220] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863810, Tracking area: 25341, LTE mode: 7
[00:08:34.621,246] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863810, Tracking area: 25341, LTE mode: 7
[00:08:47.451,812] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863810, Tracking area: 25341, LTE mode: 7
[00:08:47.693,847] <wrn> lte_lc: Registration rejected, EMM cause: 11, Cell ID: 7863810, Tracking area: 25341, LTE mode: 7
uart:~$

I also tried to run the sample code from nrfconnect sdk 2.9.1 "modem_callbacks" and even then I get the same warnings of 

Registration rejected, EMM cause: 13, Cell ID: 464671, Tracking area: 25582, LTE mode: 9

I am currently in UK and I checked that both SIM cards one is Onomondo and other is conexa both can operate in uk. I tried by moving at different locations in same house like near window or placing kit outside window but no luck with either of SIM card. 

Also I have another simcard which came with my thingy 91 few months ago and I didn't used that one its Ibasis card but after inserting that still dont get anything,

Do we need to activate these cards or something need to be done before adding to kit? Why this LTE connection is not working in standard codes?

With cellular monitor I do get these connections status but not sure why it's not working on the code when run standalone. 

Any thoughts or help would be greatly appreciated.

Thanks,

[AraNRF91]

Before trying other areas for coverage you could try to actively search and list your available cell towers with "AT=COPS=?". This will take some minutes but returns a list of all your sourrounding cells which you then can verify with https://www.opencellid.org and with that you verify your hardware is working, which cell towers you could connect to and ask your provider about further support as you can tell them which cells you try to use.

On my nrf9151 i got connection problems too and resolved it by turning all search functions off and after that activate the modem with CFUN=1, as any search disabled the modem from connecting to a cell. Maybe there is a active search running in the background?

You can look for further informations and error path in my other ticket: devzone.nordicsemi.com/.../540255