I can't connect to the GPRS network

[MrRocklion]

I'm trying to test the MinimalModemNBIOT example but for some reason after I correctly configured the APN, the only message I get is the one below.

OK AT+CGREG?

+CGREG: 0,2 I am powering the board directly from the usb of my laptop. I tried the GPS test and it worked correctly but when I try to test the GPRS test it can't connect, I already tried with different operators and sim cards and the result is the same.

[lewisxhe]

It seems that the SIM card is inserted backwards?

[aovestdipaperino]

I have the same issue and the SIM is installed correctly (SMS READY) But it goes from

OK
AT+CGREG?

+CGREG: 0,2

to

OK
AT+CGREG?

+CGREG: 0,3

Signal quality is top (31), GPS works very well, tried different SIMs, AT+COPS? returns 0. I uploaded the latest firmware provided here (B08) with no changes.

[lewisxhe]

@aovestdipaperino APN Settings https://github.com/Xinyuan-LilyGO/LilyGo-T-SIM7080G/commit/9ea916e3412e8faa9db61fa6a49753919dec61dc

[aovestdipaperino]

Nope, they are correct. People at SIMCOM explained me that this module doesn't support LTE/4G, but only NB-IOT or CATM. And this support is a function of the SIM. So basically you can't plug in a phone SIM and expect to work, but special SIMs are required. Finding those, since information is scarse, is hard. I am getting one delivered today and I will report back.

[lewisxhe]

Yes, SIM7080 does not support LTE. You must use a SIM card that supports NB or CAT-M to work.

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This issue is stale because it has been open for 30 days with no activity.

[github-actions[bot]]

This issue was closed because it has been inactive for 14 days since being marked as stale.