SMS send don't work in 4G-mode

[pizdjuk]

But works if the modem put in 2G mode only (I didnt test other variants). In 4G mode mmcli returns "timeout was reached".

[pizdjuk]

Just flashed the 003.003 modem firmware. Nothing changed. The issue still present in both (002 and 003) variants.

[Biktorgj]

Did it work in stock? That seems to either work or not depending on the carrier.

There's a command to force the modem to use a specific method to send SMS, and that is AT+CGSMS
Query the current configuration by sending AT+CGSMS?, then you can set it to whatever you need:

• AT+CGSMS=0 -> Always use GPRS to send messages (probably needs the correct APN settings for it)
• AT+CGSMS=1 -> Always use legacy mode (via SMSC) to send messages
• AT+CGSMS=2 -> Use GPRS by default and fallback to legacy if it fails
• AT+CGSMS=3 -> Use Legacy by default and fallback to GPRS

Still, some users do have problems sending messages even after changing this setting. I have not been able to replicate this though, so if it works please let me know

[pizdjuk]

tried all of the setting without success. Do you have an e-mail that I could attach all modem-logs (for security reasons I would not post it here)?

[pothos]

@pizdjuk It's a problem with the provider and the workaound is to disable IMS in eg25-manager which means that calls and SMS will use 2G instead of VoLTE (and during the SMS sending or call there data transfer will not use LTE speed).
I do not recommend to do it because the call quality is worse. I would rather manually switch to 2G in case of sending an SMS or issuing an USSD code.

That's the change to the eg25-manager config to disable IMS:

sudo nano /usr/share/eg25-manager/pine64,pinephone-1.2.toml
# change the last part of '{ cmd = "QCFG", subcmd = "ims", expect = "1" },' to 'subcmd = "ims", value = "2"'
sudo systemctl reboot

You may also try to set value = "0" instead of value = "2", one of them worked for me, but I forgot which. In any case you can check if with mmcli -m any --command='AT+QCFG="ims"' which should return the matching value as first digit of the output.

[pizdjuk]

Yeah, man! Thanks! It worked. I with value="1"

The call-quality of 2G is completely ok for me :)

[pizdjuk]

Dont work anymore :/

[pothos]

Didn't check the docs but with value = 1 I don't think it will disable IMS, try 0 or 2 and reboot, I would say.

[pizdjuk]

With value=0 didn't work. With value=2 works. Thanks!!

I could sent about 12-15 sms without problems till now.

I close the issue for now.

[pizdjuk]

Something strange is going on. I rebooted and cannot send SMS again. The file didnt change

[mpodshivalin]

I've also had this problem.

Data&Calls work across all networks, but when I'm on 4G, I can't send and receive SMS. mmcli -m 0 --messaging-list-sms shows this:

    /org/freedesktop/ModemManager1/SMS/1 (unknown)
    /org/freedesktop/ModemManager1/SMS/0 (unknown)

• Original firmware also has this exact problem
• It doesn't appear to be an OS problem since it can be reproduced in Manjaro KDE and PostmarketOS Phosh
• Doesn't matter if I have ADSP Version 01.003.01.003 or 01.002.01.002
• If I have an incoming SMS in "unknown" status, it seems that there is no way I can read it so I lose all incoming SMS while on 4G. So switching to 2G to send an SMS isn't an option

I've commented out this line in /usr/share/eg25-manager/pine64,pinephone-1.2.toml

{ cmd = "QCFG", subcmd = "ims", expect = "1" },

And the problem has gone away, I can reliably get SMS, do calls & 4G internet. Call quality seems ok to me

[UltraBlackLinux]

@pizdjuk It's a problem with the provider and the workaound is to disable IMS in eg25-manager which means that calls and SMS will use 2G instead of VoLTE (and during the SMS sending or call there data transfer will not use LTE speed). I do not recommend to do it because the call quality is worse. I would rather manually switch to 2G in case of sending an SMS or issuing an

That worked for me, thank you!