SIMCom Wireless Solutions SIM8262E-M2 Instructions Manual page 42

Question:The SIM820X has so many antenna ports, do they have to be connected? What is the
function?
Answer:
The antenna must be connected, and the corresponding functions are as follows:
Question:What should I do if I can't receive the GPS signal and get the location information?
Answer:
Plug the GPS antenna into the GNSS antenna socket (SIM8200EA is ANT5; SIM8202G is
ANT2), and place the receiver in the open air (note that it cannot be tested in rainy weather).
It takes about 1 minute to receive the positioning signal after power-on.
Question:Is SPI or USB for data transmission?
Answer:
You can use USB to transfer data, and runs "sudo ./install" to load the USB driver. We can use
the USB connector of Raspberry Pi 3B/4B to communicate, also you can take the same steps