SIMCom SIM7600G-H: APN and network setup with an IoT SIM

Updated 27 October 2026

The SIMCom SIM7600G-H is a cellular module for LTE Cat-4 with 3G and 2G fallback; it also has GNSS. With an IoT SIM, you set the APN with AT+CGDCONT=1,"IP","<apn>", choose the radio technology, 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 describes it as	LTE Cat 4 module
Radio technologies	LTE Cat-4, 3G, 2G
2G fallback	yes
3G fallback	yes
GNSS	yes
Form factor	LCC+LGA, 119 pins, 30.0 × 30.0 × 2.9 mm
Variants and regions	SIM7600G-H R2: LTE-FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66; LTE-TDD B34/B38/B39/B40/B41; WCDMA B1/B2/B4/B5/B6/B8/B19; GSM 850/900/1800/1900MHz. Page also lists SIM7600SA-H, SIM7600JC-H, SIM7600E-H, SIM7600NA-H.

SIMCom's current page lists the SIM7600G-H R2; the facts above come from that page.

Source: SIMCom, SIM7600G-H 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 SIM7500/SIM7600 Series AT Command Manual V3.00, pages 188 and 189.

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

Choose the radio technology

AT+CNMP=38

2 = automatic, 13 = GSM only, 14 = WCDMA only, 38 = LTE only.

Source: SIMCom SIM7500/SIM7600 Series AT Command Manual V3.00, pages 99 and 100.

Open the data connection

AT+NETOPEN

Opens the internal TCP/IP stack. A host operating system uses the USB network interface instead.

Source: SIMCom SIM7500/SIM7600 Series AT Command Manual V3.00, pages 270 and 271.

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 SIM7500/SIM7600 Series AT Command Manual V3.00, page 65.

Networks and shutdowns

2G fallback helps only where 2G still runs. Many operators have switched it off: see the 2G and 3G shutdown dates.
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.

Frequently asked questions

How do I set the APN on the SIMCom SIM7600G-H?

Send AT+CGDCONT=1,"IP","<apn>", with the APN of your SIM in place of <apn>. Source: SIMCom SIM7500/SIM7600 Series AT Command Manual V3.00.

Does the SIMCom SIM7600G-H fall back to 2G?

Yes, SIMCom lists 2G (GSM/GPRS/EGPRS) fallback for the SIM7600G-H. It only helps where operators still run 2G.

Why does my SIM7600G-H show +CEREG: 0,5?

Status 5 means registered in roaming, a normal working state for an IoT SIM that uses partner networks. Treat it like status 1 (home network) in your firmware.