Comments on: Getting Started with LILYGO TTGO T-A7670G ESP32 (4G, GPRS, and GPS)

By: Sumesh

Sumesh — Sun, 27 Jul 2025 09:06:45 +0000

How to make it work for T-A7670E
[5346] ### Modem: A7670E-LNXY-UBL
[5346] Modem Name: A7670E-LNXY-UBL
Modem Info: Manufacturer: SIMCOM INCORPORATED Model: A7670E-LNXY-UBL Revision: A7670M4_V1.010.001 IMEI: 862771076564528
Waiting for network… success
[6318] Network connected
[6325] CCID: +ICCID: 8944501606231160218
[6924] IMEI: +CGEV: NW PDN DEACT 1
Operator:
+CGEV: NW PDN ACT 1

By: Claudio

Claudio — Sat, 19 Jul 2025 10:45:30 +0000

buongiorno e sempre complimenti; sapete se e come è possibile acquisire le informazioni dell’alimentazione:
carica della bartteria, connesso o meno alla USb ,…
Grazie

By: Zeyad

Zeyad — Fri, 18 Jul 2025 15:08:19 +0000

In reply to Jan.

Dear Jan,

I am using the same A7670E but I can get it to work, can I ask what you changed for it to work properly?

Kind reagrds,
Zeyad

By: Zeyad

Zeyad — Fri, 18 Jul 2025 15:02:52 +0000

Hey,
I am using the lilygo T-Call-A7670E but the code is stuck after start modem it keeps printing “……………….”, is there a way to fix it?

Thanks,
Zeyad

By: Claudio

Claudio — Sat, 05 Jul 2025 15:13:24 +0000

In reply to Sergio.

Salve ragazzi e complimenti per il tutorial e la disponibilità che dimostrate nel rispondere a tutti.
Io ho configurato un LILYGO® T-Call V1.4 con SIM800L facendomi aiutare da ChatGPT (ma voi siete meglio) e attuando un collegamento MQTT con Home Assistant per inviare SMS in caso di allarme innescato e funziona (tranne l’acquisizione dei dati di carica della batteria. a cui sto lavorando).
Prossimamente vorrei passare al dispositivo che avete descritto (versione europea).
Grazie per tutto

By: Yigal

Yigal — Thu, 03 Jul 2025 17:35:42 +0000

In my previouse message I mistakenly mentioned another module (LILYGO T-A7670G).
The module that I use is Lilygo T-A7670E .

Thanks

Yigal

By: Yigal

Yigal — Thu, 03 Jul 2025 16:47:27 +0000

Hello,

I am new to the LILYGO T-A7670G module and need some help with the power supply for this module.
I intend to use this module in my PCBA design and understand that I need to provide between 3.7 to 4.2 V and the peak current can reach arround 2.8 Amp (Because of the Cellular module).
Appreciate recommandations for suitable DC-DC converters or any Idea for powering the module.
I can use a 12VDC or 19VDC or 24VDC and step down to the 3.7V-42.V to the module and 3.3V for the rest of my PCBA logic.
Thanks

By: Sara Santos

Sara Santos — Sat, 17 May 2025 10:50:39 +0000

In reply to Johan.

Hi.
Are you using the correct library?
Please note that you need to use the same fork we’re using in the tutorial and not the original library.
Take a look at the troubleshooting tips at the end of the post.
Regards,
Sara

By: Johan

Johan — Sat, 17 May 2025 10:47:47 +0000

First, thank you for yet another great tutorial I'm trying run your example, but get the error "Enable network failed!" when doing modem.setNetworkActive(). I can't find information on what could be the reason for this error. Could you (or anyone) point me in the right direction? I also tried to send a text message (SMS), copying code from another tutorial. This failed too. Any ideas on possible causes here? Everything works, when I use the SIM card in a phone.

By: Shlomo Shamy

Shlomo Shamy — Wed, 14 May 2025 19:36:11 +0000

Very good explantion, Thank you!
everting is good until the IP address. IP address: empty and fail to connect to the HTTPS. What wrong?