Incoming SMS not reported via MQTT

[JCh]

Hello,
I am using Kincony G1 with SIM7600 module fw KCS 3.19.1 and MQTT integration.

According to the forum documentation, incoming SMS should be reported via MQTT STATE  topic in this format:

Code:

{
"sms_recv": {
"phone": "+8612345678901",
"content": "example"
}
}

Unfortunately, I am unable to get this working.
My setup:

• Device: Kincony G1
  
• GSM module: SIM7600
  
• Firmware: KCS v3.19.1
  
• MQTT broker: working correctly
  
• Home Assistant 2026.2.3
  
• Topics: 
   G1/XXXXXXXXXXXX/SET -  working (sending SMS works)
   G1/XXXXXXXXXXXX/STATE -  working (inputs, call_ring, etc.)
  

What works:

• MQTT STATE reporting for inputs (input1…input12)
  
• Outgoing SMS via MQTT (run_sms)
  

What does NOT work:

• Incoming SMS and calling are not reported to MQTT
  
• No (sms_recv) payload is published to STATE topic
  

Tests performed:

• Clean SIM card (no stored SMS)
  
• Very simple SMS content: TEST (no diacritics, no multipart)
  

When an SMS is received, no new MQTT message is published at all.

Question: Is sms_recv currently supported on Kincony G1 with SIM7600 in official KCS v3 firmware?

If yes:

• Is there any additional configuration required?
  
• Is SMS TEXT mode (AT+CMGF=1) required and handled automatically by firmware?
  

If not:

• Can you confirm that incoming SMS → MQTT reporting is currently not supported / disabled for this hardware?
  

Thank you for clarification.

[admin]

after China New Year holidays , we will test it then feedback to you.