SIMCom SIM7672 series: APN and network setup with an IoT SIM

Updated 27 October 2026

The SIMCom SIM7672 series is a cellular module for LTE Cat-1. With an IoT SIM, you set the APN with AT+CGDCONT=1,"IP","<apn>", then check that the module is registered, at home or in roaming. Vendor commands come from SIMCom's manuals, standard ones from 3GPP TS 27.007; each cites its document.

Key facts

SIMCom's product page says LTE Cat 1; its hardware design describes the SIM7672 as LTE Cat-1 bis.

Source: SIMCom, SIM7672 series product page. Checked 27 October 2026. SIMCom's manuals require a login on simcom.com: we read SIMCom's own documents in the versions named, which may be older than the current ones, and cite them by title and page.

Set the APN

AT+CGDCONT=1,"IP","<apn>"

Source: SIMCom SIM767XX Series AT Command Manual V1.06, pages 74 to 78.

Replace <apn> with the APN shown in your M2M.global account: the internet APN, or your private APN.

Open the data connection

AT+NETOPEN

Opens the internal TCP/IP stack.

Source: SIMCom SIM767XX Series AT Command Manual V1.06, page 206.

Check that it works

AT+CPIN?        SIM ready? expect +CPIN: READY
AT+CEREG?       LTE registration: stat 1 = home network, 5 = roaming
AT+COPS?        network the module is using
AT+CGDCONT?     APN actually configured
AT+CSQ

An IoT SIM that works in many countries is often registered in roaming: +CEREG: 0,5 is a valid, working registration. Firmware that waits only for status 1 (home network) never goes online on such a SIM. Status values come from 3GPP TS 27.007; the signal command from SIMCom SIM767XX Series AT Command Manual V1.06, page 37.

Networks and shutdowns

• No 2G or 3G dependency: the SIM7672 series is not affected by 2G and 3G shutdowns.
• Private delivery works with any module: the privacy is in the network path, not in the device. See private delivery.

The SIM: IoT SIM cards and IoT eSIM. All commands explained: AT commands.