I'm using the following USB to M2 adapter: https://thewirelesshaven.com/shop/mini- ... dapter-v7/
for a Telit FN990 5G modem. Unfortunately I am keep getting SIM not detected. Tried directly sending AT comands as well as using ModemManager, but the results are the same.
Also tested with 3 different SIMs but the results are the same.
Any help is highly appreciated.
Regards,
Fabrizio
SIM not detected with Telit 5G modem
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Didneywhorl
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Re: SIM not detected with Telit 5G modem
Unfortunately I'm getting SIM failure:
AT+ICCID
+CME ERROR: SIM failure
I have tried to reverse the SIMIN polarity (AT#SIMINCFG) and after switching the SIM slot with AT#SIMDET, I'm getting something:
AT#SIMPR?
#SIMPR: 0,0,1
#SIMPR: 0,1,0
(slot #0 seems to have SIM detected), but any attempt to read any value off it, keep responding with error:
AT+CIMI
+CME ERROR: SIM not inserted
Regards,
Fab
AT+ICCID
+CME ERROR: SIM failure
I have tried to reverse the SIMIN polarity (AT#SIMINCFG) and after switching the SIM slot with AT#SIMDET, I'm getting something:
AT#SIMPR?
#SIMPR: 0,0,1
#SIMPR: 0,1,0
(slot #0 seems to have SIM detected), but any attempt to read any value off it, keep responding with error:
AT+CIMI
+CME ERROR: SIM not inserted
Regards,
Fab
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Didneywhorl
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Re: SIM not detected with Telit 5G modem
Have you also been polling with: AT#SIMDET ?
The Telit modem stuff is not my strongest. I wish all these modem manufacturers would stop with the extremely different (read: "proprietary") methods to use the exact same things.
The Telit modem stuff is not my strongest. I wish all these modem manufacturers would stop with the extremely different (read: "proprietary") methods to use the exact same things.
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Didneywhorl
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Re: SIM not detected with Telit 5G modem
Have you tested the adapter with another modem brand/model to see if it reads the SIM?
Re: SIM not detected with Telit 5G modem
Thank you so much for trying to help... I really appreciate. I feel at least I can speak with someone who knows more than me here (Telit support is not really helping)...
So, polling with AT#SIMDET? is the only way to get the modem to at least detect a change in the SIMIN pin...
To be more precise after a reboot (with SIM inserted), I query AT#SIMDET? few times, but no changes, then I switch between slot 0 to slot 1 and back to slot 1, and only at that point it reports SIM inserted (through a SIMPR unsolicited message)....
SIMDET? reports SIMIN pin high, and even a direct query through AT#SIMPR? reports present....
... but AT#SIMSS still says "no SIM"
... and even AT+CIMI reports "ERROR: SIM not inserted"
It seems the SIM card is detected (the SIMIN polarity seems need to be HIGH instead of the default LOW)... but there are communication issues with it...
I am trying to test it with a different adapter, but the adapter "recommended" (and supported) by Tecship/Telit is out of stock... I guess I can try with an older adapter this week but I have to remove some LED around the M2 connector (in the adapter) because this modem module won't fit.
Another thing I need to try is to upgrade the firmware of the module... will keep you posted.
Thanks again for your suggestions.
So, polling with AT#SIMDET? is the only way to get the modem to at least detect a change in the SIMIN pin...
To be more precise after a reboot (with SIM inserted), I query AT#SIMDET? few times, but no changes, then I switch between slot 0 to slot 1 and back to slot 1, and only at that point it reports SIM inserted (through a SIMPR unsolicited message)....
SIMDET? reports SIMIN pin high, and even a direct query through AT#SIMPR? reports present....
... but AT#SIMSS still says "no SIM"
... and even AT+CIMI reports "ERROR: SIM not inserted"
It seems the SIM card is detected (the SIMIN polarity seems need to be HIGH instead of the default LOW)... but there are communication issues with it...
I am trying to test it with a different adapter, but the adapter "recommended" (and supported) by Tecship/Telit is out of stock... I guess I can try with an older adapter this week but I have to remove some LED around the M2 connector (in the adapter) because this modem module won't fit.
Another thing I need to try is to upgrade the firmware of the module... will keep you posted.
Thanks again for your suggestions.
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Didneywhorl
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Re: SIM not detected with Telit 5G modem
Keep us posted.
In my experience Telit has been a little weird with their implementations.
In my experience Telit has been a little weird with their implementations.
