The nRF9160 with Hologram SIM connects fine in Minnesota, USA, but not in Winnellie NT, Australia

[Marty]

While testing a new nRF9160 based product with a Hologram SIM card, it connects fine in Minnesota, USA, but not in Winnellie NT, Australia.

Do you have insight into why this would be or advice regarding next steps?

Research shows
I can't confirm Hologram has a roaming arrangement with Telstra

UMNOPROF=0 (in some cases) in combination with +COPS=1,2,“50501” corrects the connection issue
Another comment from Hologram was, "The global Cat-M1/NB-IoT roaming scenario isn’t fully standardized yet"
Is that true and if so how does that effect a product attempting to be globally distributed?

4G connectivity in Australia
Optus 4G 700 MHz network in Darwin (Winnellie)
Telstra 4G services in the 700 MHz spectrum in Perth, Fremantle, Esperance, Mildura, Mt Isa and Griffith.
NBN Co Limited ?
TPG Telecom Limited, formerly Vodafone Hutchison Australia 4G 850 MHz and 1800 MHz

USA main Carriers 4G LTE bands // Main frequencies
АТ&T 2, 4, 5, 12, 14, 17, 29, 30, 66 // 1900, 1700 abcde, 700bc
Verizon Wireless 2, 4, 5, 13, 46, 48, 66 // 1900, 1700 f, 700 c
T-Mobile 2, 4, 5, 12, 66, 71 // 1900, 1700 def, 700 a, 600
Sprint 25, 26, 41 // 2500, 1900 g, 850
Europe 3, 7, 20 // 1800, 2600, 800
China, India 3, 40, 41 // 1800, 2300, 2500

en.wikipedia.org/.../4G_connectivity_in_Australia
en.wikipedia.org/.../List_of_LTE_networks
ipsnews.net/.../
community.hologram.io/.../2731
hologram.io/.../ // This is not up to date

[Marty]

My Australian customer replied, "Telstra – they won't talk to us about a hologram SIM unfortunately. Though, as noted, can also try a Telstra sim card directly, ignoring hologram altogether. This previously hasn’t worked though."

My customer is in the North Central region, I'll convert this to public.  Hopefully someone has some experience with this.

Thank you,

Marty

[Hakon]

Marty said:

This previously hasn’t worked though.

Have you tried to check what the reason for this is? Seems a bit odd. Also, if you can't connect with a Telstra SIM directly, what makes you think that you can use a different SIM card to roam on the same network? Maybe you can try this again, and show the logs if it doesn't work.