I am trying to buy an NB-IoT SIM card in the UK as the LTE-M SIM included with my Thingy:91 does not work here. I know that Vodafone supposedly run the NB-IoT network here but I am not sure what to buy and where to buy it.I spoke to Vodafone helpdesk today but they didn't know what I was talking about.
Has anybody in the London area of the UK managed to connect a Thingy:91? If so, I'd appreciate the details.
Hi, I'm interested in this discussion too. I recently got an nrf9160-dk to try out this new lower power IOT technology. Only to be severely dissapointed :). I'm still persevering with the iBasis card. I'm near Croydon (CR5) in the UK.
I managed to flash the latest modem firmware (a mission in itself) and then have tried switching the modem between M1 and NB1 modes using XSYSTEMMODE. I get no signal on M1 but do on MB1. In MB1 (NB-IOT?) I'm seeing CESQ returning good numbers. But still no network connection. So my guess here is that the SIM is not playing ball with whoever is providing the NB-IOT signal. Maybe it just needs a magic AT command to register on the network 
I've also tried flashing the tracker app in NB-IoT mode. I can see NB-IoT being selected in the AT command on reset. Network mode: AT%XSYSTEMMODE=0,1,1,0
This is the stauts I get from the tracking app . I think status code 4 is "unknown" (out of coverage?) "+CEREG: 4,"33EC","00038C15",9,0,13,"11100000","11100000"
I have to say this all seems a lot harder than it should be.
Paul
Hi, I'm interested in this discussion too. I recently got an nrf9160-dk to try out this new lower power IOT technology. Only to be severely dissapointed :). I'm still persevering with the iBasis card. I'm near Croydon (CR5) in the UK.
I managed to flash the latest modem firmware (a mission in itself) and then have tried switching the modem between M1 and NB1 modes using XSYSTEMMODE. I get no signal on M1 but do on MB1. In MB1 (NB-IOT?) I'm seeing CESQ returning good numbers. But still no network connection. So my guess here is that the SIM is not playing ball with whoever is providing the NB-IOT signal. Maybe it just needs a magic AT command to register on the network
I've also tried flashing the tracker app in NB-IoT mode. I can see NB-IoT being selected in the AT command on reset. Network mode: AT%XSYSTEMMODE=0,1,1,0
This is the stauts I get from the tracking app . I think status code 4 is "unknown" (out of coverage?) "+CEREG: 4,"33EC","00038C15",9,0,13,"11100000","11100000"
I have to say this all seems a lot harder than it should be.
Paul
