AT+CFUN=1
Question:What should I do if the SIM820X module NDIS dial fails and the driver cannot be
installed?
Answer:
*It is recommended to use RNDIS Dial-up
• You can program the newest Raspbian system and reconfigure NDIS dial-up.
• Also, you can use the pre-configured image.
Question:How can I test whether the 4G/5G module is connected to the device successfully?
Answer:
Use the following commands to check whether the SIM820X and Raspberry Pi are well
connected. If there is no problem, you can see the Qualcomm device and ttyUSB0-USB4:
lsusb
ls /dev
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