SIM8262E-M2 5G HAT

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SIM8202G-M2
RM500U-CN 5G HAT
SIM8262E-M2
RM500U-title.jpg

Raspberry Pi 5G/4G/3G/GNSS
RPI, USB3.1
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Overview

SIM8202G-M2: Based on Qualcomm X55 with 3GPP 5G Release 15.
SIM8262E-M2: Based on Qualcomm X62 with 3GPP 5G Release 16.

Features

  • Based on Qualcomm platform, support 5G NSA and SA networking, support multi-mode and multi-band
  • Integrated multi-constellation system dual-frequency positioning: GPS, GLONASS, BeiDou, Galileo and QZSS
  • Support Windows / Linux / Android and other operating systems
  • USB 3.1 port (USB 2.0 compatible) for connecting to PC, Raspberry Pi, or Jetson Nano host board to enable high speed 5G communication
  • Onboard M.2 B KEY slot, compatible with 5G modules such as SIM8202X-M2 / SIM8200EA-M2 / SIM8262X-M2 series
  • Onboard UART, PWR, and RST control pin, built-in voltage level translator, enabled via DIP switch, for use with hosts like Raspberry Pi or Arduino
  • Onboard USB-C connector, enabled via switch, for connecting standalone power supply for the module, allows more loads, stable and flexible power supply
  • Onboard power switch, reset button, and LED indicator, easy to switch the control module on and off and check the running status
  • Onboard 4-way SMA to IPEX antenna adapting interface, factory default welded SMA terminals, antenna installation is more convenient
  • Onboard two SIM card slots, dual-card single-standby, can be switched and enabled by AT command
  • Onboard audio interface and audio decoding chip, which can be used for voice manipulation such as making calls
  • High-efficiency power supply circuit, up to 3A output current

Selection Guide

You can choose a 5G module or an optional case.
SIM8262E-M2 5G H2.png
SIM8262E-M2 5G H1.png

5G Module Parameters

SIM8200EA-M2 SIM8202G-M2 SIM8262E-M2 SIM8262A-M2
5G standard 3GPP R15 3GPP R16
Chip solution Qualcomm Snapdragon X55 Qualcomm Snapdragon X62
Working Band
Sub-6G n1, n2, n3, n5, n7, n8, n12, n20, n28, n38, n40, n41, n48, n66, n71, n78 n1, n2, n3, n5, n7, n8, n12, n20, n28, n38, n40, n41, n66, n71, n77, n78, n79 n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n77, n78,n79 n2, n5, n7, n12, n13, n14, n25, n30, n41, n48, n66, n71, n77, n78, n79
LTE-FDD B1, B2, B3, B4, B5, B7, B8, B12, B13, B14, B17, B18, B19, B20, B25, B26, B28, B29, B30, B32, B66, B71 B1, B3, B5, B7, B8, B18, B19, B20, B26, B28, B32 B2, B4, B5, B7, B12, B13, B14, B25, B26, B29, B30, B66, B71
LTE-TDD B34, B38, B39, B40, B41, B42, B43, B48 B38, B39, B40, B41, B42, B43 B41, B46, B48
WCDMA B1, B2, B3, B4, B5, B8 B1, B5, B8 B2, B4, B5
GNSS GPS, GLONASS, BeiDou, Galileo and QZSS
Data Transfer
Sub-6G 2.4 Gbps (DL)  /  500 Mbps (UL)
LTE 1 Gbps (DL)  /  200 Mbps (UL)
HSPA+ 42 Mbps (DL)  /  5.76 Mbps (UL)
Software Function
Operating System Windows/Linux/Android
Communication Protocol TCP/IP, IPV4, IPV6, Multi-PDP, FTP, FTPS, HTTP, HTTPS, MQTTS, DNS, SSL3.0
Dial-up RNDIS, NDIS, PPP, MBIM
Text Message (SMS) Support MT, MO, CB, Text, PDU
Firmware Upgrade Supports firmware upgrade via USB interface
Hardware Description
SIM Card 1.8V/2.95V
Antenna Interface for 3G/4G/5G/GNSS
6 × IPEX-4 ports 4 × IPEX-4 ports
Power Supply 3.135~4.4V
Outline Package M.2
Dimensions 52.0 × 30.0 × 2.3mm 42.0 × 30.0 × 2.3mm
Operating Temperature -30℃ ~ +70℃
Application Scenarios
Applicable Area China, US, Japan, Korea, Europe, Middle East, Americas All regions except Americas Americas
The applicable area is for reference only, and the appropriate module should be selected according to the frequency band covered and supported by the local operator's network.
Typical Applications CPE, smart gateway, drone, live video, telemedicine, smart security

What's On Board

M2-HAT-top.png

Number Name Description
Raspberry Pi GPIO header For connecting to Raspberry Pi
Switch Enable the corresponding pin:

Turn the dial switch No. 1 to ON, and the Raspberry Pi D5 controls the shutdown
Turn the No. 2 DIP switch to ON, and pull the Raspberry Pi D4 low to reset

M.2 connector Compatible with RM500U-CN / RM500Q-CN / RM500Q-GL /RM50XQ-AE and other series of 5G modules
SIM card holder Onboard two SIM card slots, dual card single standby. The default SIM1 card slot works, SIM2 is on the back, requires module support, and must be switched through AT commands
USB3.1 interface Backward compatible with USB 2.0, can be used to connect to PC/Raspberry Pi/Jetson Nano, etc.
USB Type-C connector 5V 3A input; stable and flexible power supply
Audio port SIM82XX series support audio function, RM50XX series do not support this audio function
Antenna interface Onboard four-way antenna, strong signal
Reset switch One-key reset
Power Switch To facilitate the power supply mode of the control module:

——If set to USB, the module will provide power through the "⑤.USB3.1 interface";
——If set to EXT PWR, the module will provide power through the "⑥.USB Type-C interface" external power supply

Cooling fan Cool down the Raspberry Pi and 5G module at the same time
Indicator light Check the module running status anytime, anywhere

M2-hat-bottom.png

Label Name Description
cooling fan can cool Raspberry Pi and 5G module at the same time
SIM card holder 2 can be selected through AT command configuration (requires module support)
Module setting switch A silk screen switch is turned ON, which can be used for SIM7600X / A7906X / IM7906X / SIM7912X series 4G M.2 modules;
B silk screen switch is turned ON, which can be used for SIM8202X / SIM8200EA / SIM8262X series 5G M.2 module;
C silk screen switch is turned ON, can be used for RM50X / RM520N-GL / EM06X series 5G / LTE-A M.2 module
USB Interface Pad USB 2.0 Interface Pad
NAU8810X Audio Chip Suitable for SIMN7600X / SIM8XXX series modules, does not support RM5XX and EM06XX series modules
Cooling fan power supply interface 5V cooling fan power supply

Pinout Definition

After connecting to Raspberry Pi with a 2*20 female header, these pins (TX, RX, D4, and D6) can be connected or not through the DIP switch:
M.2-TO-4G-5G-HAT-Pin-defined.jpg

4G/5G modules function testing

Category 4G/5G Module Network Communication GNSS Positioning Voice calls through
Earphone Port
Dual SIMs UART Interface External Power Supply?
5G SIM8202G-M2 5G/4G/3G Support Support Support Support Optional, recommended
5G SIM8262E-M2 5G/4G/3G Support Support Support Support Optional, recommended
5G SIM8200EA-M2 5G/4G/3G Support Support Support Support Optional, recommended
5G RM500U-CN 5G/4G/3G N/A N/A Support Support Recommended
5G RM500Q-GL 5G/4G/3G Support N/A Support N/A Recommended
5G RM500Q-AE 5G/4G/3G Support N/A N/A N/A Recommended
5G RM502Q-AE 5G/4G/3G Support N/A N/A N/A Recommended
LTE-A EM06-E LTE-A/4G/3G N/A N/A N/A N/A Optional
LTE-A A7906E LTE-A/4G/3G N/A N/A N/A N/A Optional
4G SIM7600G-H-M2 4G/3G/2G Support Support N/A Support Optional

4G/5G Module Compatibility

If you need to use the M.2 TO 4G/5G HAT for other 4G/5G modules, you can refer to the M.2 connection diagram below, check whether there is any pin conflict, and then connect to test:
M.2-Compatibility.jpg

User Manual

Working With Windows

Direct Installation

Download a driver (Resource->Software->SIM8200 Driver) on your computer and then unzip it.
Enter SIM8200_OS_Driver\Windows directory.
For most hosts, you can enter "1_install" directory and then click "setup.exe" to install.
Sim8200 windows driver1.png
After connecting, a mobile network icon will appear. You can disconnect from other networks and test the mobile network.

Install Driver Manually

For some hosts, the port may not appear even if "1_install" is installed. In this case, you need to use the files in "2_AddManully" to add them manually. The way to use it is to find the unrecognized device in the device manager and right-click to add the driver, as follows:
Power on the G module and turn the switch to ON, the module starts, and the computer will recognize 4 unknown devices (maybe some boards will recognize 5 or 6), only 5 in the picture:
Sim8200 windows driver0.png
Right-click the device, update the driver manually, choose SIM8200_OS_Driver\Windows, and then choose the driver according to the version of your OS. You need to update for all four/five/six devices:
Sim8200 windows driver1.png
Four COM ports: AT is used for AT command controlling, and Audio is used for dial up. Diagnostics is used for debugging, and NMEA is used for GPS.
Sim8200 windows driver2.png
Sim8200 windows driver3.png
A mobile network will be set up automatically after updating, you can disconnect other networks and test it.

Manual NDIS Dial-up Internet

If the above 2 steps have been done, Windows cannot access the Internet, you need to manually start the NDIS dial-up.
Open the sim8200 AT port and send the command:

AT$QCRMCALL=1,1+Enter

After dialing is successful, as shown in the figure below, the computer can go online normally.
Sim8200 win sendat1.png
At this time, the NDIS dialing takes effect, and the computer can connect to the network; if it returns No Carrier, it may have dialed up, and you can go online to see it directly.

GPS Positioning

SIM8200EA-M2 is ANT5; SIM8202G-M2 is ANT2; SIM8262E-M2 is ANT3; see the module hardware manual for details

Connect the passive GPS antenna to the ANT5 of the module, and place the antenna outdoors facing the sky. Then send the AT command to turn on the GPS:

AT+CGPS=1 #Enter

Sim8200 gps info0.png
Now open the NEMA port, you can get GPS data:
Sim8200 gps info1.png

Working With Raspberry Pi

The following method is for NDIS dial-up, which is temporarily unsupported for Raspbian systems dated April 4, 2022. If errors occur, please verify that the system is dated before April 4, 2022. For Raspbian systems dated after April 4, 2022, it is recommended to use the system's built-in driver for SIM820X RNDIS dial-up, which automatically initiates internal dialing SIM820X RNDIS Dail-up.

Configuration At The First Time

Please don't type the wrong letter, it's better to copy and paste.

sudo apt-get install p7zip-full
wget https://files.waveshare.com/upload/8/89/SIM8200_for_RPI.7z
7z x SIM8200_for_RPI.7z  -r -o./SIM8200_for_RPI
sudo chmod 777 -R SIM8200_for_RPI
cd SIM8200_for_RPI
sudo ./install.sh

Please do not delete or modify the "option" directory, "qmi_wwan_simcom" directory, "default.script", "install.sh" files, otherwise it will affect the loading of the driver.
If there is an error, please confirm whether the system is "2020-08-20-raspios-buster-armhf", and take a screenshot of the error message so that engineers can help you analyze and solve the problem.
Run "ifconfig -a" to see that "WWAN0" has been generated.
SIM8200 RPI 2.png

Test AT Command

sudo apt-get install minicom
sudo minicom -D /dev/ttyUSB2

SIM8200 RPI 1.png

NIDS Dial-up

cd Goonline
make
sudo ./simcom-cm

After running codes, DNS information is shown in the figure below:
SIM8200 RPI 3.png
After connecting two SIM820X to the Raspberry Pi through USB, two network cards—wwan0 and wwan1 can be recognized. The two network cards can be dialed at the same time through the following commands: (The network speed cannot be superimposed)

sudo ./simcom-cm -i wwan0
sudo ./simcom-cm -i wwan1

SIM8200X Working01.png

  • Note: If the IP cannot be obtained or the networking is not successful, use the following commands to obtain the IP and set the DNS networking:
sudo dhclient -v wwan0
sudo route add -net 0.0.0.0 wwan0

Auto-run

If you want to set the codes auto-run after booting, you can modify rc.local file:

sudo nano /etc/rc.local

Add the line to file as below:

sudo /home/pi/SIM8200-M2_5G_HAT_code/Goonline/simcom-cm &

Note that you have to add "&" to the end of the command, make sure that the command can be run in the background, or the Pi may not boot normally.

Live streaming with ffmpeg

If you are using the 2020-08-20-raspios-buster-armhf image, then you don't need to install anything as the system already comes with ffmpeg.
Going straight to the topic, assuming you already have a camera and it's properly connected to the Raspberry Pi, then proceed with the tutorial.

  • The camera must be enabled by running the raspi-config command before using it:
sudo raspi-config
Select Enable Camera, select YES

Rpi Enable Camera.png

  • If it is a camera using the CSI interface, the system cannot find the device node of /dev/video0. A line for bcm2835-v4l2 needs to be added to the /etc/modules file:
sudo nano /etc/modules

add:

bcm2835-v4l2 

Pan-tilt hat addmodules.png
Then after the system starts, the system will load the module name in this file and restart the system:

sudo reboot
ls /dev/video*

The video0 device node is found below.
SIM862E-M2 5G HAT USER GUIDE03.png
Note: If after performing the first steps, please confirm that the operation and instructions are correct.
Suppose you are using Douyu Live now, register your account and enable the host function, open Douyu Live Host Center, and find the live broadcast settings.
SIM862E-M2 5G HAT USER GUIDE04.png
Open video plug flow setting:
SIM862E-M2 5G HAT USER GUIDE05.png
The rtmp address and live code will be obtained, and the Raspberry Pi will execute the command:

ffmpeg -f video4linux2 -s 640x480 -r 25 -i /dev/video0 -c:v h264_omx -f flv "rtmp address/live code"

For example: open a terminal first, runs the 5G network:

cd Goonline
sudo ./simcom-cm

and then open another terminal, run the following command:

ffmpeg -f video4linux2 -s 640x480 -r 25 -i /dev/video0 -c:v h264_omx -f flv "rtmp://sendtc3.douyu.com/live/9188303rTNGmU7CS?wsSecret=ef762877aae120262eaf23c3f60a28bf&wsTime=5f59dbf0&wsSeek=off&wm=0&tw=0&roirecognition=0"

rtmp://sendtc3.douyu.com/live is the address, and the next section is the live code. Enter the room number at this time, you can observe the live broadcast, the delay is about 1-2S.

How To Use OpenWrt

Introduction

Soft routing is using desktops or servers and other equipment with software. It mainly depends on the settings of the software to achieve the functions of the router. The hard routing is a unique hardware device, including a processor, power supply, and embedded software to provide router functionality.
OpenWrt is a very popular soft routing system. It is a highly modular and highly automated embedded Linux system with powerful network components and scalability. It is often used in industrial control equipment, routers, and other equipment.
In addition to the functions of general home routers, OpenWrt soft routing can also achieve port forwarding, intranet penetration, 4G networking, FTP server and more powerful functions.

Program the image

Download the RPI OpenWrt system, unzip the system in the Imgs directory, and use the burning tool to burn the system to the SD card.

Login & Initial Settings

  • After the OpenWrt system is turned on, the Raspberry Pi is equivalent to a router. Therefore, you can use a network cable to connect the Raspberry Pi to the computer according to the use of the router (you can also use the mobile phone to search for WIFI, the default name is "OpenWrt"). Enter 192.168.1.1 on the webpage, the default username: root, the default password: password, and enter the Web management interface of OpenWrt.
SIM820x OpenWrt(EN) (2).png
  • Set WIFI password: Network -> Wireless -> Modify -> Interface Configuration -> Wireless Security, as shown below:
SIM820X OpenWrt01.png
  • Create the new interface: Network -> Interface -> Create interface
  • Modify the IPv4 address of the lan port to a different IP that is not the same as the lan port IP of other routers in your home. (Many routers default the lan port IP to 192.168.1.1. If you do not modify the IP of the OpenWrt, it will easily lead to conflicts and fail to connect to the Internet.)
  • If necessary, it is also recommended to disable the IPv6 allocation length. After the modification is completed, click "Save & Apply", and re-use 192.168.10.1 to access the OpenWrt console.
SIM820x OpenWrt(EN) (3).png
  • In addition, it is recommended to adjust the Firewall setting to connect the OpenWrt terminal and Web management interface through the local area.
  • Network —>Firewall, change all "reject" to "accept", click "Save & Apply" after modification, as shown in the picture below:
SIM820x OpenWrt(EN) (4).png
  • And then select System -> Administration, modify the allowed interface for SSH access to "unspecified" (that is, any interface can be accessed by ssh), check the Gateway port, and click "Save & Apply" after the modification is completed.
SIM820X OpenWrt02.png
  • At this point, you can connect to the OpenWrt web management interface or terminal through the IP address of the lan port or wan port.

Check the working status of the driver

Connect to the OpenWrt terminal via SSH, and run the following commands to view the qmi driver, USB device, network port registration, and network port status:

dmesg | grep qmi
dmesg | grep ttyUSB 
ls /dev | grep cdc-wdm 
ifconfig wwan0
SIM8200 OpenWrt 7.png

Configure networking

  • Select System -> FileTransfer, select and upload simcom-cm in the simcom-cm directory of the folder:
SIM820x OpenWrt(EN) (6).png

Use the above "File Transfer" to upload, the uploaded program is located in "simcom-cm" under the /tmp/upload/ directory.

Enter the following commands in the terminal:

cp /tmp/upload/simcom-cm /
chmod a+x simcom-cm
./simcom-cm

【Note】: Closing this terminal will cause the networking program to stop, which will cause the network to be disconnected. It is recommended to run in the background.

SIM8200 OpenWrt 9.png
  • At this time, open a new terminal of OpenWrt and enter the command: ifconfig wwan0. You can see that the wwan0 network port has successfully obtained the operator IP and can ping the external network.
SIM8200 OpenWrt 10.png
  • Enter the Web management interface of OpenWrt, click Network —>Interface —>Create a new interface.
SIM820x OpenWrt(EN) (7).png
  • Enter the interface as shown in the picture below and confirm that the interface selection in "Physical Settings" is "wwan0".
SIM820x OpenWrt(EN) (8).png
  • Confirm that the interface selection in "Firewall Settings" is "wan".
SIM820x OpenWrt(EN) (9).png
  • Click "Save & Apply" to complete the network port settings, then return to the interface below, network-interface, you can see that the network port has been correctly identified.
SIM820x OpenWrt(EN) (10).png

Then the other devices can be connected to the wireless "OpenWrt" or through the network cable to connect to OpenWrt's own network port for networking.

5G network speed test

In terms of the speed measurement, as the Raspberry Pi comes with a Gigabit Ethernet port, and there are few USB network cards above Gigabit, we use the "SpeedTest For Python" tool to test the speed with the command.
Connect to the terminal of the OpenWrt, and enter the command one by one to test:

opkg update
opkg install python3
opkg install python3-pip
pip install speedtest_cli
speedtest or speedtest_cli
When the SIM8202G module is registered to the 5G network and the signal is good, connect to the OpenWrt hotspot (5.8G) through the mobile phone, and the mobile phone can measure the speed of about 100M. The actual speed measurement may be different and is for reference only.

Raspberry Pi minicom Serial Port Debugging

1. Insert the module into the Raspberry Pi, and turn the S_TX and S_RX of the DIP switch to ON:
SIM8262-UART.png
2. Install minicom, minicom is a serial debugging tool for the Linux platform:

sudo apt-get install minicom

Open ttyUSB2 through minicom

sudo minicom -D /dev/ttyUSB2

Send to enable UART port:

AT+CCUART=1

3. Open ttyS0 through minicom——ttyS0 is the serial port of Raspberry Pi 3B/3B+/4B, the default baud rate is 115200;

sudo minicom -D /dev/ttyS0

4. For Raspberry Pi 2B/zero, the user serial device number is ttyAMA0; you can use the following command line to confirm, serial0 is the selected serial device number, as shown below:

ls -l /dev/serial*

RM500U-CN 5G HAT 9.png

Working With Jetson Nano

It is recommended that you use the system image jetson-nano-sd-card-image (updated in October 2020). The Linux kernel version of this system is 4.9.140-tegra. The previous system is 4.4. This tutorial is based on the 4.9 kernels. If there is a difference, please update to the same version as this one, which will minimize the chance of your using it incorrectly.
If you are using other linux systems, please download the driver under SIM8200_OS_Driver\linux and port it according to the documentation under it.

Configuration Required for First Use

  • It's best to copy and paste in case you type the wrong letters:
sudo apt-get install p7zip-full
wget https://files.waveshare.com/upload/0/07/Sim8200_for_jetsonnano.7z
7z x Sim8200_for_jetsonnano.7z -r -o./Sim8200_for_jetsonnano
sudo chmod 777 -R Sim8200_for_jetsonnano
cd Sim8200_for_jetsonnano
sudo ./install.sh

Please do not delete or modify the "options", "qmi_wwan_simcom", "default.script", "install.sh" directory files, otherwise it will affect the loading of the driver.
If there is an error, please confirm whether the system kernel is 4.9.140-tegra, and take a screenshot of the error message so that engineers can help you analyze and solve the problem.
Run "ifconfig -a" to see that WWAN0 has been generated.
Sim8200 jetsonnano 1.png

AT Test Command

sudo apt-get install minicom
sudo minicom -D /dev/ttyUSB2

SIM8200 RPI 1.png

5G Network

cd Goonline
make
sudo ./simcom-cm

You can successfully see that DNS has been generated at the bottom.
Sim8200 jetsonnano 2.png

Others

If you need to use the product on other systems, please download the SIM8200_OS_Driver file, and refer to the SIMCOM official documentation to add the driver.

About the Speed

Due to the differences between actual and laboratory conditions, the 5G speed will not be ideal and stable at 100MBPS. There are the following points:

  • Base station distance, the closer to the 5G base station, the better the signal and the faster the speed.
  • Base station load, the fewer people using it, the faster the speed will be, and the rush hour will be slower.
  • Number of base stations: Due to spectrum relationships, the same amount of 4G coverage requires double the number of 5G base stations.
  • Provider: You need to confirm whether your 5G card is limited in speed, you can periodically ask the provider to reset your network.
  • Indoors is worse than outdoor: building penetration loss, and indoor diffraction loss.
  • PS: The current number of base stations still does not have good coverage, and the speed measurement in different locations is not the same.

Resource

Assembly Guide

Demo

Software

Datasheet

For resources about SIM8262E-M2 HAT, please refer to SIMCom

FAQ

Network

 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.)

{{{5}}}


 Answer:
After confirming that the SIM card is open for the 5G package and has sufficient balance and local 5G network coverage, follow the steps below to fix 5G (boost network speed):
AT+CNBP? //(you can copy the band to notepad) backup band
AT+CNBP=0x100600000FC00000,0x00000000000000460000A7E2BB0F38DF,0x0000000000000000,0x00000000003FFE63000681E2090828D7. 0x00000000003FFE63000681E2090828D7 //assign the band to SIM820X
or
AT+CNBP=0x100600000FC00000,0x0000000000000046000001E2000908DD,0x00000000000000000000,0x00000000000000007042000081A0080808D7. 0x00000000000070000000010000000000 //give the frequency band to SIM820X
AT+CNMP=71 // Fixed 5G

{{{5}}}


 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:
  AT+CFUN=1


Network

 Answer:

In this case, the network connection may not be successful. Follow the steps below to troubleshoot:
1. First, check the hardware:

  • Check whether the connected SIM card can communicate and surf the Internet normally on mobile phones and other devices:
  • Check whether the antenna is connected properly;
  • Check that the NET light is flashing, and it is always on, indicating that it is not registered to the network

2. After confirming that the hardware is OK, you can use the following command (AT LOG) to further confirm the network situation:

*Check the firmware version information: AT+SIMCOMATI
*Check if the sim card is in good contact: AT+CPIN?
*Turn the radio on (turn off airplane mode): AT+CFUN=1
*Check that the network mode is set to auto-seek: AT+CNMP=2
*Check the signal quality of the current environment: AT+CSQ
*Check if the registration to the network is successful: AT+CGREG?
*Check internet connection: AT+CPSI?
*Check if the APN corresponds to the operator of the SIM card: AT+CGDCONT?
*Check operator access: AT+COPS?

SIM8262E-M2 5G HAT04.png

{{{5}}}


 Answer:
Confirm that the SIM card connected to the SIM820X can use 5G in mobile phones and other devices through methods such as speed measurement:
The fact that the mobile phone can obtain 5G means that there is a 5G signal in the local area, but the mobile phone supports much more 5G frequency bands than the module, and the 5G module may not necessarily be able to register to the 5G network or ask the local operator for the 5G frequency, and the 5G module supports Under the benchmarking, or go to the local city center (where there are 5G NR cells) to test!
  • After confirming that the SIM card is normal and the local 5G network is covered, follow the steps below to fix 5G (to increase the network speed).
AT+CNBP? //(Can copy the frequency band to Notepad) Backup frequency band
AT+CNBP = 0x100600000FC00000, 0x000000000000000046004600001e2000908dd, 0x00000000000000000000000000000070420081a00808d7, 0x0000000000000000000000 //
AT+CNMP=71 // Fixed 5G
  • The 5G operator's SIM card frequency band should cover the SIM820X frequency band; sometimes the 4G network is queried, and the speed has reached 5G. You can directly measure the speed to confirm that the 5G network speed is available.
  • To confirm whether the test environment has 5G network coverage, you can install Cellular-Z on a 5G mobile phone (all major app stores can download it) to view the detailed network information:

5G APP message-1-.png
5G APP message02.png

  • Apple phones can follow the following steps to obtain band information:
    • Open the phone dialer, enter *3001#12345#*, then click the dialer button.
    • In the pop-up page, first, find and click "Serving Cell Info", then find and click "Freg Band Indicator.
    • Check according to the table issued by the operator, and you will know.

5G APP message03.jpg

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 Answer:
Specific frequency bands can be fixed by the following commands, here fixed at 41 and 78:
AT+CSYSSEL="nr5g_band",41:78

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 Answer:
  • It is recommended to use the more convenient RNDIS dial-up.
  • You can burn the latest Raspberry Pi Raspbian system and reconfigure the NDIS dial-up.
  • Or you can use the image of the RNDIS dial-up with drivers already configured and boot the Raspbian system image (with drivers installed).

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 Answer:
  • You can use the following commands to check the connection. If the connection is OK, you can see Qualcomm device and ttyUSB0-USB4:
lsusb
ls /dev

SIM820X-ttyUSB.png

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 Answer:
  • 1. It is recommended to replace the SIM card of different operators to test: different operators support different 5G frequency bands, change the card at the same time can also solve other problems with the card; if you use an IOT card, it is recommended to replace the ordinary cell phone SIM card (in the cell phone can make phone calls and send text messages SIM card) to test, there are some pure traffic card or IOT card in other devices or change the device is limited, also can not register to the 5G network, or ask the IoT card vendor to check whether the status of the card is normal.
  • 2. Please configure the APN correctly, the APN determines the way to enter the network, it is the agent of the carrier and the cellular module, sometimes the APN is able to be obtained automatically, many times you need to obtain it manually, you can set it by the following commands:
AT+CGDCONT=1,"IP","Your_APN"   // The APN of different operators is different, here the APN is changed to the corresponding operators.
  • 3. It may be that the antenna's band does not cover the band of the operators you are using, please follow up with a full band high gain antenna suitable for your local area to test, and connect all antennas, all antennas are useful, otherwise it may also cause network problems;
  • 4. If it still doesn't work, please refer to the following steps to print the network AT log and give the log to our service support team for analysis
View firmware version information:
AT+SIMCOMATI
*Check that the SIM card is in good contact:
AT+CPIN?
*Turn the RF on (turn off flight mode):
AT+CFUN=1
*Check that the network mode is set to auto-seek:
AT+CNMP=2
*Check the signal quality of the current environment:
AT+CSQ
*Check if you have successfully registered to the network:
AT+CGREG?
*Check networking:
AT+CPSI?
*Check if the APN corresponds to the operator of the SIM card:
AT+CGDCONT?
*Check operator access:
AT+COPS?

SIM820X-SIM7600X-NETWORK.png

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Location

 Answer:
The antenna must be connected, and the corresponding functions are as follows:

SIM8262E-M2 5G HAT07.png

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 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.

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 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 to operate in windows for USB loading. Without a USB driver, it will be identified as an unknown device.

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 Answer:
Not occupied by default.

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 Answer:
Make sure that your system kernel is above 5.4. Do not use sudo update to upgrade the Raspberry Pi to the latest version, otherwise, the kernel version will be upgraded to a version higher than the current firmware and it will not be recognized.

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 Answer:
Yes, connect to different USB ports of different hosts, take Raspberry Pi as an example, and the instructions for dialing up the Internet at the same time are as follows:
sudo ./simcom-cm -i wwan0
sudo ./simcom-cm -i wwan1

5G-multi-usb.jpg

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 Answer:

The following commands can be used to save the SMS to the module memory:

AT+CPMS="MT" 

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 Answer:
The VOLTE function can be turned on with the following command:
at+voltesetting=1
 at+cnv=/nv/item_files/modem/mmode/ue_usage_setting,1,01,1

The VOLTE function can be turned off with the following command:

at+voltesetting=0
at+cnv=/nv/item_files/modem/mmode/ue_usage_setting,0,01,1

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Hardware

 Answer:
  • If only the connector has come off, you can simply replace it.
  • If the copper foil has also come off, it usually cannot be repaired.
  • When removing it, please wiggle it gently from side to side and pull it out evenly, avoiding forceful pulling.
  • The IPEX4 generation connectors are relatively fragile, so please handle them with extra care.

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 Answer:

You can use the following commands to check whether there is Qualcomm device. If the COM driver (included in the Raspberry Pi system) is loaded, "ttyUSB*" also will display.

lsusb
ls /dev/ttyUSB*

Lusb-ttyUSB.png

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 Answer:

After prolonged operation, the lubricating oil in the rolling bearing fan may evaporate, leading to increased noise. This is a common phenomenon with rolling bearing fans and does not indicate a malfunction of the fan.

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 Answer:

It requires a module with the M.2 B KEY B interface and USB function, modules without USB function (PCIE only) are not supported, the following modules have been verified:

Fibocom: FM650-CN FM160-EAU	
SIMCOM: SIM8202G-M2 SIM8262E-M2 SIM8262A-M2
Quectel: (AA version) RM520N-GL RM530N-GL RM500U-CNV RM500Q-GL/RM502Q-AE 
  • If used with other modules, ensure pin compatibility, and verify through actual testing.

The M.2B KEY connector with USB function can be used if it matches the wiring sequence shown in the figure below: RM520N-GL91.png

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