Unfortunately there is no interactive map for the coverage of NB-IoT in Poland.
However, T-Mobile Poland has published a press release in which they announced the nationwide coverage (coverage of 94%).

They also published a map where you can get an overview of the coverage in different regions:

Unfortunately there is no interactive map for the coverage of NB-IoT in Poland.
However, T-Mobile Poland has published a press release in which they announced the nationwide coverage (coverage of 94%).

They also published a map where you can get an overview of the coverage in different regions:

Hi Thomas,

Please stay patient.
There will be more information in the next few weeks.

Best regards,
Noah

Deutsche Telekom has certified the LTE-M GM01Q platform from Sequans, and there are no plans currently to certify the NB01Q (NB-IoT variant of the same platform). This affects all modules based off of that platform, including the pycom G01, gpy and fipy modules.

Does this topic answer your questions?

https://forum.iot.t-mobile.nl/topic/504/maximum-number-of-messages-per-day/6

Best regards,
Noah

Hi Thomas,
every module supplier implement their own Maximal Transfer Unit (MTU). They can reach up to 1.358 Bytes.
If the message is larger than the MTU, the message should be divided into smaller messages.

We only limit the amount of data per month and the number of daily messages per device.

Best regards
Noah

Unfortunately we cannot answer this question at the moment. Please be patient, as we need to discuss the topic with our network experts.
Best, Noah

What exactly do you mean with eSIM? Could it be a MFF SIM card (embedded SIM)?

The command for the US is:
AT+CGDCONT=1,“IP”, “iot.nb”

Dear Pete,
thank you for your question. It will be answered soon.