I have a SIMCom SIM808 module built up on my own breakout board. Whenever I query the temperature I get back the exact same temperature, 24.11 (deg C) despite the actual temperature in the room varying. This happens for days on end, over dozens of queries.
AT+CMTE?
+CMTE: 0,24.11
OK
I have tried this exact same AT command sequence on a Adafruit FONA with a SIM800H module and I get proper varying temperatures.
AT+CMTE?
+CMTE: 0,23.26
OK
AT+CMTE?
+CMTE: 0,23.29
OK
The User Manual is the same for the entire SIM800 series, So I haven't been able to find any specific guidance on my SIM808 vs the SIM800H
Everything else on this SIM808 module seems to be working well, just not the temperature. Has anyone else run into this? Is there some SIM808 specific setup I'm missing?