Question regarding modem

[AntonReiser]

Hi Anton,
That's great!
See my previous post for eg25-manager configuration, change the IMS config.
This what you need to change to disable VoLTE support even after reboot:

Code:

# Enable VoLTE support
#    { cmd = "QCFG", subcmd = "ims", expect = "1" },
    { cmd = "QCFG", subcmd = "ims", value = "2" },

It works for my Pinephone so should for you as well.

Weird that 4G calls work if VoLTE is 0 as then calls should switch to 3G....no idea about the AT+CFUN though I understood it as being a reset...I might try with my Pinephone over the weekend. Note that by default eg25-manager has IMS set by MBN so enabled for you it seems.

Thanks, @dcinoz !

What I had not understood: Where do I have to save these lines? 

In /usr/share/eg25-manager there are three files: pine64,pinephone-1.0.toml, pine64,pinephone-1.1.toml and pine64,pinephone-1.2.toml

They all contain these lines

Code:

# Enable VoLTE support

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

Do I have to exchange them in all three files with the lines you posted? And did I understand it correctly that I should copy the directory eg25-manager to  /etc? (Sorry for asking, but I'm a bit afraid of breaking things.)

Regarding the 4G calls: When response: '+QCFG: "ims",2,0' then the phone sends messages and it does indeed do 4G calls, or at least it keeps showing the "4G" on the display when having called or been called. On the other, older pinephone (with firmware version 01.001.01.001) it drops to 2G immediately when making calls. (By the way: While force 3G on the new phone [which we had tried in the course of our conversation] did not change the SMS problem, I later discovered that force 2G does: With only 2G enabled the phone can send messages.)

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I followed this Instructions https://wiki.pine64.org/index.php/PinePh...are_update
Actual Firmware:
mobian@mobian:~$ mmcli -m any --command='AT+QGMR'
response: 'EG25GGBR07A08M2G_01.003.00.000'

Hi Walter,

That's exactly what I did; same firmware version here.

So chances might be good that dcinoz' instructions work for you as well. 

What finally did the trick for me was trying this immediately after restart:

Code:

mmcli -m any --command='AT+QCFG="ims",2'

Best of luck!