I second what Uta said for roaming use-cases.

For non-roaming use-cases, I would recommend to always set the band and the PLMN ID to ensure faster attach. So please be more patient with the attach time if you don’t set these values.

@Jeroen-van-Bussel of course you can work on automatic mode, the modem would scan through the whole PLMN list until it finds a network. This can take a while and I agree, it’s the only thing that makes sense for devices in non-static use cases.

As roaming is more or less transparent for the device as well as backend-end server, this recommendation formulated here https://forum.iotcreators.com/topic/594/data-packet-size still applies.

Hi @MeneerJacco
please send me your ICCID or IMSI in a private message via the forum chat tool and I’m going to look at your tariff.
Thanks,
Uta

@Uta - Hello! Yes, the activity is expected as a field is test is ongoing (yesterday and today). Additional logs from the 2 SIMs at of the day today via email would be again appreciated.

@Kolja-Vornholt The problem was as summarized:

I’ve set our modem to band 20-only. I want to use auto-attach (at+cops=0) but it did not find a network However, manual attach (with selecting Vodafone’s network) did work

Doing something else for about 30 minutes around the time @Kolja-Vornholt left the reply about searching the network.
Trying the search only gave me seemingly non-related info (“90104”),
But trying the auto-COPS suddenly did the trick and attached in no time.

So, it doesn’t really seem like a solution yet…

We can find this out by looking up the connection info in our network.
Can you please send me the ICCID (number on the sim-card) or IMSI via DM or support@iotcreators.com?

Thanks!

Hi,

today we took a nice comort sensor (CO2/Temp/Humidity/BodySense) in Barcelona into operation.

We configured

21401 as PLMN ID for Vodafone Spain and used 20 for the frequencyband (800Mhz). cdp.iot.t-mobile.nl as APN for IoT Creators

It worked immediately without any problems.

Regards, Roland

@Malte-Neumann Hi Malte, please send the 10 ICCIDs to support@iotcreators.com . I will check them .

Please use as PLMN IDs from page https://docs.iotcreators.com/docs/telekom-iot-networks-in-europe

Regards, Roland

@Roalnd-Baldin Cool! Nice to see it works now.

Mobile IoT roaming goes live across Europe

Dear IoT Community,

Deutsche Telekom (DT) has issued a press release regarding the significant expansion of our NB-IoT Roaming capability. Complete press release you can find here:
Mobile IoT roaming goes live across Europe

Thanks to new Roaming agreements signed with Swisscom, Telia and Vodafone, DT has now got the largest NB-IoT Roaming footprint across Europe, also covering the following markets:

Swisscom: Switzerland, Liechtenstein

Vodafone: Spain, Italy, Germany, Netherlands, UK

Telia: Sweden, Finland, Norway, Denmark

Our Connectivity Portfolio (“Smart Connect” and “Comfort Connect”) will be updated in the coming weeks to reflect the new roaming capabilities.

The announcement is already being relayed on the web, see for instance on MobileWorldLive.

Kind regards,
Your IoT Community Team

Last update: 22.02.2021

NB-IoT roaming is available for the Global SIM of Deutsche Telekom.

The LPWA tariff “Europe Zone 1” currently provides NB-IoT roaming across 17 countries. These include:

Deutsche Telekom’s networks in Germany, The Netherlands, Austria, Czech Republic, Slovakia, Hungary, Greece, Poland and Croatia Swisscom’s network in: Switzerland and Liechtenstein Vodafone’s networks in Spain, Italy, Germany, The Netherlands and the United Kingdom Telia’s networks in Sweden, Finland, Denmark and Norway Telenet’s network and Orange’s network in Belgium

In European countries for which DT has no NB-IoT roaming agreements yet, multimode devices with the Global SIM can utilize 2G and 3G instead, and also LTE-M (currently in Germany, Austria, France, Belgium, Netherlands, Switzerland and Latvia).

For a full list of our Mobile-IoT roaming partners including non-European partners, please go to our Roaming Network Information page.

Our NB-IoT (and LTE-M) roaming footprint is being gradually extended with further countries, so stay tuned! 🙂

By the way, there also a consolidation of all coverage maps of Deutsche Telekom countries.