> For the complete documentation index, see [llms.txt](https://docs.monogoto.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.monogoto.io/getting-started/general-device-configurations/iot-devices/simcom-sim7070g.md). # SIMCom SIM7070G The [**SIMCom SIM7070G**](https://www.simcom.com/product/SIM7070G.html) modem has global support for LTE Cat-M1, NB-IoT, GPRS and EDGE, as well as GNSS positioning. ![](/files/5E9qPBNMa0N2PlLb2KWJ) ### Quick Navigation * [Connect the SIM7070G to Monogoto](#connect-the-sim7070g-to-monogoto) * [Test the connection by sending a PING](#test-the-connection-by-sending-a-ping) * [Useful Links](#useful-links) * [Getting Started with the Waveshare SIM7070G](/getting-started/general-device-configurations/iot-devices/simcom-sim7070g/waveshare-sim7070g.md) ### Prerequisites * Monogoto SIM * SIM7070G modem ## Connect the SIM7070G to Monogoto {% hint style="info" %} When connecting to the SIMCom modem, keep the **AT Commands manual** next to you to look up details about commands. To download the latest version, visit the [**SIMCom website**](https://www.simcom.com/product/SIM7070G.html) and scroll down to the section **File Download**. {% endhint %} **Reset the modem** to its default configuration: ```bash AT+CFUN=1,1 ``` Set the error reporting to **verbose**, resulting in more descriptive error messages (optional): ```bash AT+CMEE=2 ``` Check if the SIM card is attached and is not locked with a PIN, expected response: `+CPIN: READY`: ```bash AT+CPIN? ``` {% hint style="warning" %} If you receive an error, the SIM may not be inserted properly or the SIM is protected with a PIN. By default, Monogoto SIMs are not PIN protected. {% endhint %} ### Query device information Request the **product type** number: ```bash ATI ``` Request the modem **hardware version**: ``` AT+CGMM ``` Request the modem **firmware version**: ```bash AT+CGMR ``` Request the **IMSI** (International Mobile Subscriber Identity): ``` AT+CIMI ``` Request the **ICCID** (Integrated Circuit Card ID), which is the identification number of the SIM card ```bash AT+CCID ``` ### Network Configuration It is possible to let the modem select the network automatically, or to manually define a network to connect with. #### **Option 1: Automatic Network Selection** To set the modem to **automatic network selection** enter the command: ```bash AT+COPS=0 ``` Check the **network and cellular technology the modem** is currently using: ``` AT+COPS? ``` Expected response: `+COPS: 0,0,"",X`. The last digit indicates the cellular technology:\ `0` indicates **GSM**\ `1` indicates **GSM compact**,\ `3` indicates **GSM EGPRS**\ `7` indicates **LTE Cat-M1** \ `9` indicates **NB-IoT** #### Option 2: Manual Network Selection Start with searching for available networks: ``` AT+COPS=? ``` {% hint style="warning" %} It may take several minutes before the modem responds. {% endhint %} The modem responds with the names and the **MCCMNC** codes of the available networks. It also shows the cellular technologies the networks support: Example response: ``` +COPS: (1,"NL KPN","NL KPN","20408",0),(2,"NL KPN","NL KPN","20408",7),(1,"vodafone NL","voda NL","20404",7),(1,"T-Mobile NL","TMO NL","20416",7),(1,"T-Mobile NL","TMO NL","20416",0),(1,"vodafone NL","voda NL","20404",0),,(0,1,2,3,4),(0,1,2) ``` To find which of the networks Monogoto has **roaming agreements** with, review the [**Coverage lists**](/getting-started/global-public-coverage.md). {% hint style="info" %} To find the **profile** of your SIM, visit the [**Monogoto Console**](https://console.monogoto.io/), open the page **Things** ![](/files/OWVV2DjKOVW5iaNl1NcG) and select a specific **Thing**. Scroll down to **Mobile Identities** to find your profile in the column **Network Provider Name**. ![](/files/0IINqu41pSHJSRJYujvX) {% endhint %} Check the **network and cellular technology** the modem is currently using: ``` AT+COPS? ``` Expected response: `+COPS: 0,0,"",X`. The last digit indicates the cellular technology. **Manually set the network and the cellular technology**: ``` AT+COPS=1,2,"XXXXX",7 ``` Replace `XXXXX` with the **MCCMNC** code of your operator, for example`"20404"` for Vodafone NL. Use `7` for **LTE Cat-M1**. **Check the radio signal strength and signal quality:** ```bash AT+CSQ ``` {% hint style="info" %} `+CSQ` returns 2 values separated by a comma. The first value represents the **signal strength** and provides a value between 0 and 31; higher numbers indicate better signal strength. The second value represents the **signal quality** indicated by a value between 0 and 7. If `AT+CSQ` returns `99,99`, the signal is undetectable or unknown. {% endhint %} #### Define the cellular band(s) (optional) It is possible to **lock the modem to one or more specific bands**. This may result in a faster boot cycle as the modem does not need to scan for available bands at startup. To **find** the available bands the modem support: ``` AT+CBANDCFG=? ``` Expected response: ``` +CBANDCFG: (CAT-M,NB-IOT),(1,2,3,4,5,8,12,13,14,18,19,20,25,26,27,28,66,71,85) ``` {% hint style="warning" %} Although the modem may support many different bands, your local network operator may not. Have a look at the [**LTE Cat-M1 overview**](broken://pages/GDSRxI85QWE6Z2lsLeS3) to find the available band(s) in your region. {% endhint %} To **lock** the modem to a specific band: \ Replace `` with your band of choice ``` AT+CBANDCFG="CAT-M", ``` **Test** if the band is properly set: ``` AT+CBANDCFG? ``` Expected response: `+CBANDCFG: "CAT-M",` ### Network Activation **Set the APN to** `data.mono`: ``` AT+CGDCONT=1,"IP","data.mono" ``` To **test** if the APN is set correctly, enter: ``` AT+CGDCONT? ``` Expected response: `+CGDCONT: 1,"IP","data.mono","0.0.0.0",0,0,0` **Activate the PDP (packet data protocol) context:** ``` AT+CGACT=1,1 ``` **Test** if the PDP context is activated: ``` AT+CGACT? ``` Expected response: `+CGACT: 1,1` To **test** what cellular technology and what band the modem is using request the UE (User Equipment) System Information: ``` AT+CPSI? ``` The first variable shows the cellular technology, `BANDXX` specifies the band. Example response: ``` +CPSI: LTE CAT-M1,Online,204-08,0xF48B,2680589,331,EUTRAN-BAND20,6400,3,3,-10,-5 ``` #### Validate if your device received an **IP address**: ```bash AT+CGPADDR ``` Expected response: `+CGPADDR: 1,XX.XXX.XX.XXX` {% hint style="success" %} Do you see an IP address? **Congratulations!** 🎉 **You’ve successfully connected the SIM7070G to Monogoto.** {% endhint %} ## Test the connection by sending a PING A PING test can be performed to test if the modem has an active data connection with a mobile network. {% hint style="warning" %} When cellular modems are idle for a long period of time, cell towers might drop the data connection to save resources. Sending regular PINGs is a good method for testing the data connection, as well as for keeping the connection alive because the operator registers your device as being actively used. {% endhint %} **Activate a data connection** for PDP index `0`**:** ``` AT+CNACT=0,1 ``` Expected response: `+APP PDP: 0,ACTIVE` **Select the PDP index** `0` for the PING test: ``` AT+SNPDPID=0 ``` Expected response: `OK` **Send 5 PINGs** to IP address `8.8.8.8` with a timeout of 20 seconds. ``` AT+SNPING4="8.8.8.8",5,1,20000 ``` If the connection is active, you will see 5 PINGs with a number representing the response time in milliseconds. Example response: ``` +SNPING4: 1,8.8.8.8,104 +SNPING4: 2,8.8.8.8,93 +SNPING4: 3,8.8.8.8,145 +SNPING4: 4,8.8.8.8,75 +SNPING4: 5,8.8.8.8,157 ``` **Deactivate the PDP index** after completing the PING test. ``` AT+CNACT=0,0 ``` Expected response: `+APP PDP: 0,DEACTIVE` {% hint style="success" %} **Great work on connecting the SIM7070G to Monogoto!** Have a look at the **Things** logs in the [**Monogoto Console**](https://console.monogoto.io/) to find more details about the established connection. {% endhint %} ## Useful Links * [Waveshare SIM7070G shop](https://www.waveshare.com/sim7070g-cat-m-nb-iot-gprs-hat.htm) * [Waveshare wiki](https://www.waveshare.com/wiki/SIM7070G_Cat-M/NB-IoT/GPRS_HAT) * [SIMCom SIM7070G product page](https://www.simcom.com/product/SIM7070G.html) * [SIMCom AT Commands]()\ \&#xNAN;*Scroll down to the section **File Download** to find the latest version*