Can't connect to NB-IoT (T-Mobile NL)
I’m using a Pycom Gpy for for sending some data to the t-mobile iot portal.
Last week it suddenly stopped sending and it no longer wanted to attach.
I’ve started a dicussion on the pycom forum, but I’m starting to think it’s the SIM card.
Does anyone know a solution?
Yes I can see that it stopped on the 1st of April. Very strange!
We checked your simcard configuration and there is nothing wrong with it.
Let me know if you want to receive a new one. Maybe the hardware of the sim is damaged?
What is the purpose if this command: AT+SQNMONI=9?
I saw someone using the command to debug their system.
The purpose is to report information for the serving cell.
Now it is reporting t-mobile PLMN ID.
But it still won’t attach.
Hmm if it is reporting a PLMN ID, I’m not sure if it could be a hardware issue with the sim.
I will send a broadcast to my network, there should be some experienced Gpy users there…
Did not find anyone :-(
Do you have another device that you could test?
Nope, I only have one Pycom Gpy.
It still won’t attach.
I’m gonna try to reflash the firmware…
Okay, my problem is fixed.
I flashed the sequans modem again and I tested my code again. But it was still not working.
I wiggled the cable of the antenna a bit and it connected to the network!
I think the antenna of my gpy wasn’t connected properly or the antenna cable is broken or something.