A7670E module store the same SMS twice when only one is sent

[jpcasta]

Hello,

When I send 1 SMS to the A7670E module, it stores it twice in 2 different storage entries: Ex: 18:37:57.205 -> 18:37:57.205 -> +CMTI: "SM",3 18:37:57.642 -> 18:37:57.681 -> +CMTI: "SM",4

If I change the value how it receives new messages using the following command: 18:38:12.942 -> AT+CNMI=2,2,0,0,0 18:38:12.942 -> OK Then it still receiving the message twice while I sent it only once: Ex: 18:38:27.654 -> +CMT: "+336xxxxxxxx","","24/10/07,18:38:27+8" 18:38:27.698 -> Test SMS 18:38:28.199 -> 18:38:28.199 -> +CMT: "+336xxxxxxxx","","24/10/07,18:38:27+8" 18:38:28.243 -> Test SMS

Why does this problem occurs? I would like to receive only 1 SMS when I send 1.

Thanks Regards

[lewisxhe]

Please provide the specific version of the module, attach the label on the modem, and the response message of AT+SIMCOMATI

[jpcasta]

1- Specific version of the module: Do you mean the version of the board? If it is the case it is: 2022-7-18 V1.2

2-Label on the modem: A7670E

3-Information returned by AT+SIMCOMATI 06:56:26.219 -> Manufacturer: INCORPORATED 06:56:26.251 -> Model: A7670E-LASE 06:56:26.251 -> Revision: A011B12A7670M7 06:56:26.283 -> A7670M7_B12V02_220613 06:56:26.315 -> QCN: 06:56:26.315 -> IMEI: 860470062753011 06:56:26.347 -> MEID: 06:56:26.347 -> +GCAP: +CGSM,+FCLASS,+DS 06:56:26.393 -> DeviceInfo: 06:56:26.393 -> 06:56:26.393 -> OK

Thanks

[lewisxhe]

Also provide the label on the modem, need to determine the hardware version

[jpcasta]

Sorry, I do not understand what you mean by the label on the modem. Are they the P/N and the SN values? Thanks

[lewisxhe]

PN Number

[jpcasta]

P/N: S2-109ZT-Z313W

[lewisxhe]

Do a simple test and send a text message with only a few characters to see if it will be received twice.

[jpcasta]

It is received twice even when I send a SMS with 1 letter. Thanks

[lewisxhe]

Please follow the documentation and video to upgrade the modem to the latest firmware, and then use the capture log to provide the log to SIMCOM for analysis. https://github.com/Xinyuan-LilyGO/LilyGO-T-A76XX/blob/main/docs/update_fw.md https://github.com/Xinyuan-LilyGO/LilyGO-T-A76XX/blob/main/docs/capture_log.md

[jpcasta]

OK but following weather issues here, it could take some days before I do it. I will let you know as soon as I have time to do it. Thanks

[jpcasta]

Hello,

I looked at the procedure and the video to upgrade the firmware but before performing the upgarde, I have some questions regarding the version of the available firmware file.

When I run the AT+SIMCOMATI command I get the following result:

Manufacturer: INCORPORATED Model: A7670E-LASE Revision: A011B12A7670M7 A7670M7_B12V02_220613 QCN: IMEI: 860470062753011 MEID: +GCAP: +CGSM,+FCLASS,+DS DeviceInfo:

The Revision value is: A011B12A7670M7 According the video that means the version of the installed firmware is B12.

However in the A124B01A7670M7_A7670E-LASE_V101240627-latest.rar file provided on github for the A7670E-LASE (No GPS) model the zip file I should use for the upgrade is: A124B01V01A7670M7_A7670E-LASE_V101240627.zip But according the video the version of this firmware would be B01.

Normally I should read a version number greater than B12? AM I wrong reading the firmware version?

Do I need to use this provided file to upgrade the modem firmware or is there another file?

Thanks

[lewisxhe]

This is a new version baseband, so it starts from B01, but it has the prefix A124

[jpcasta]

Hello, I updated successfully le firmware of the modem and now it is receiving the SMS only once.

However when I run the AT+SIMCOMATI command, it does not returm the IMEI value: 09:36:06.995 -> AT+SIMCOMATI

09:36:07.027 -> Manufacturer: SIMCOM INCORPORATED 09:36:07.059 -> Model: A7670E-LASE 09:36:07.091 -> Revision: A124B01A7670M7 09:36:07.123 -> A7670M7_B01V01_240722 09:36:07.123 -> IMEI: 09:36:07.164 -> 09:36:07.164 -> OK 09:36:31.850 ->

And now I can no longer send a SMS!! I guess it is because the IMEI value is missing. Here is what I get when I run the example progran SendSMS

10:17:45.492 -> Online registration successful 10:17:45.492 -> 10:17:45.492 -> Registration Status:1 10:17:46.491 -> Init success, start to send message to +33620857862 10:17:46.491 -> AT+GSN 10:17:46.491 -> AT+GSN 10:17:46.491 -> +CME ERROR: memory failure 10:17:47.162 -> 10:17:47.162 -> PB DONE 10:17:47.482 -> [17620] ### Unhandled: PB DONE 10:17:47.482 -> AT+CMGF=1 10:17:47.482 -> AT+CMGF=1

10:17:47.482 -> OK 10:17:47.482 -> AT+CSCS="GSM" 10:17:47.482 -> AT+CSCS="GSM"

10:17:47.604 -> OK 10:17:47.604 -> AT+CMGS="+336" 10:17:47.604 -> AT+CMGS="+336"

10:17:47.604 -> >Hello from +CME ERROR: memory failure Hello from +CME ERROR: memory failure 10:17:47.604 -> +CMS ERROR:Send sms message fail 10:17:47.648 -> Network timeout

What do I need to do to make it work again, because it is now unusable.

Thanks Regards

[lewisxhe]

The IMEI may be lost due to firmware update. The IMEI is on the label of the modem. Send AT+SIMEI=IMEI number to reset it.

[jpcasta]

Ok Thanks a lot, it works again!! The issue is solved.

Thanks for your help Regards

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