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?
Fullscreen
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
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?
When I modify AT+CGDCONT as follows, PDN becomes Green, when LTE still blinks Yellow/Red
Fullscreen
1
2
3
4
5
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,
