LTE Modem not registered..

[uchar]

I’m studying the NRF9160-DK board - I installed the Basis SIM card and followed the instructions : www.nordicsemi.com/.../GetStarted

I launched the Link Monitor program - the modem answers AT commands, but cannot register on the network :(

I checked the SIM card - installed it on my smartphone and turned on data transfer in roaming (I am from Russia) - the phone registered on the network (Beeline) and the transmission data works.

I updated the modem firmware (as indicated in the instructions), and also updated the nrf9160 firmware (I took the files from the nrf9160dk_fw_2019-11-29_d3130d77.zip).

The LTE indicator flashes yellow / red.

What am I doing wrong? Help me please.

[Martin Lesund]

Hi Uchar,

You are not doing anything wrong.
Unfortunately, the iBasis SIM card is not supported in Russia for the LTE-M network. (different from the network that got you connected on the phone).

According to the GSMA official deployment map, only NB-IoT is supported in Russia. 
So you need to get a SIM card from one of the carriers linked in the GSMA map.

[uchar]

Thanks for the answer.
But I don’t understand why the iBasis SIM card works in my Xiaomi smartphone?

[Martin Lesund]

Your cellphone is most likely using the regular "4G" network and the network in your area allows roaming SIMs on that network.

(but does not support roaming SIMs on their NB-IoT network)

[uchar]

Thanks.