• SIM82XX_SIM83XX_Series_GNSS_Application_Note_V1.00.pdf
• SIM82XX_SIM83XX_Series_HTTP(S)_Application_Note_V1.01.pdf
• SIM82XX_SIM83XX_Series_LBS_Application_Note_V1.01.pdf
• SIM82XX_SIM83XX_Series_MQTT(S)_Application_Note_V1.01.pdf
• SIM82XX_SIM83XX_Series_SMS_Application_Note_V1.01.pdf
• SIM82XX_SIM83XX_Series_TTS_Application_Note_V1.01.pdf
Question:Why is my 5G speed not as fast as it says online?
Answer:
First of all, there are slight differences between laboratory data and actual data. In practice,
due to insufficient base stations, poor signal coverage, and many 5G coverage holes, the
network speed may not reach the highest peak. Under normal circumstances, the 4G upload
speed is stable at 20-40Mbps, and the 5G upload speed is stable at 100Mbps (the fewer
people, the faster the speed is closer to the base station.)
Question:SIM820X-M2 5G HAT does not recognize the SIM card, what should I do?
Answer:
• The default is to use SIM card 1, it may be switched to SIM card 2, please use the
following command to switch to SIM card 1:
AT+SMSIMCFG=1,1
• Or directly switch to SIM card 2:
AT+SMSIMCFG=1,2
• If it still doesn't work, consider that the airplane mode is turned on, and use the
following command to turn off the airplane mode: