Hi,
I am now in Hong Kong, and trying to connect to NB-IoT network here. There are 2 providers of NB-IoT in Hong Kong: "CMHK" and "Three". They provide NB-IoT since 2017 in the region.
I have a 4.5G sim card on Three for my smartphone: so I plugged it into the nRF9160-DK (with at_client firmware, after a nrfjprog -e, and a clean build and flash), and run LTE Link Monitor.
4.5G is supposed to offer NB-IoT as well as regular LTE, and functionalities of 5G.
I get the following AT+CFUN?
Do you see what I need to modify?
AT+CFUN? +CFUN: 0 OK AT+CFUN=1 OK AT+CFUN? +CFUN: 1 OK AT+CGSN=1 +CGSN: "352656100221848" OK AT+CGMI Nordic Semiconductor ASA OK AT+CGMM nRF9160-SICA OK AT+CGMR mfw_nrf9160_1.1.1 OK AT+CEMODE? +CEMODE: 2 OK AT%XCBAND=? %XCBAND: (1,2,3,4,5,8,12,13,14,17,18,19,20,25,26,28,66) OK AT+CMEE? +CMEE: 0 OK AT+CMEE=1 OK AT+CNEC? +CNEC: 0 OK AT+CNEC=24 OK AT+CGEREP? +CGEREP: 0,0 OK AT+CGDCONT? OK AT+CGACT? OK AT+CGEREP=1 OK AT+CIND=1,1,1 OK AT+CEREG=2 OK AT+CEREG? +CEREG: 2,4,"FFFE","FFFFFFFF",7 OK AT%CESQ=1 OK AT+CESQ +CESQ: 99,99,255,255,255,255 OK AT%XSIM=1 OK AT%XSIM? %XSIM: 1 OK AT+CPIN? +CPIN: READY OK AT+CPINR="SIM PIN" +CPINR: "SIM PIN",3 OK AT+CIMI 454030010286363 OK
When I modify AT+CGDCONT as follows, PDN becomes Green, when LTE still blinks Yellow/Red
AT+CGDCONT=0, "IP", "mobile.three.com.hk" OK AT+CGDCONT? +CGDCONT: 0,"IP","mobile.three.com.hk","",0,0 OK
Is there another setup I am missing, with the AT instructions, to enable the LTE-M or NB-IoT?
Best regards,
