Xperia 10 III,, FI Elisa, 4G usually hard, 2G never, "VoLTE" calls only

REPRODUCIBILITY: 2G always, 4G usually
HARDWARE: Sony Xperia 10 III
UI LANGUAGE: Finnisn, En-US, E-UK ← tried ones, for screenshots
REGRESSION: not at least for 4G, worked w/ same version 2023-11 (2G untried for a while)


After booting device, or bringing mobile data back from flight mode, getting mobile connection
up usually does not work out of the box – have to manually retry connections 1-n times.

That is the usual case. sometimes it comes up w/o any manual intervention – sometimes even
almost immediately, sometimes it takes a minute or so…

But that ie 4G only – cannot get 2G to work at all – and most probably that is also reason
“4G Calling (beta)” has to be enabled, otherwise voice calls don’t work (surprisingly SMS message
telling missed call got through)

When I put the same SIM to my Xperia X, (with, both 4G and 2G worked – and calling
when 2G only worked.

I don’t know if that is a coincidence, but FI Elisa dropped 3G in my area around November-December
2023 – tried to find exact time, closer to that there was article dated 2023-12-19 telling 3G has shut
down and what one should do…



  1. reboot device
  2. expect 4G to come up automatically without too much delay


4G mobile date working – and can do phone calls w/o 4G calling enabled !


4G may be denied – and after manual connection retries got 4G connection but without
“4G calling” phone calls don’t work

^^ I am experiencing this in Elisa network in southern Finland. ^^


Patchmanager installed, but 0 patches enabled (could not figure out how to easily uninstall patchmanager)

Situations installed but not active (I used situations to put phone in flight mode over night to
make battery drain smaller – for some reason situations could not consistenly do that…))



^^ When manual attempt to activate Fi elisa failed ^^

^^ When automatic network selection was ‘Denied’ ^^

^^ When attempt to “2G only” just fails ^^

pictures created from screenshots:

1) convert -resize 50% shot.png scaled.png
2) pngquant -f -o opt.png scaled.png
3) optipng --strip all -o9 opt.png
1 Like

I can only say that for me with Vodafone in Germany i am also not able to get internet with 4G. I just can use 2.5G most of the time and sometimes 4G, but only for calls/sms not mobile network ':frowning:

I am getting the following results from testing my Xperia 10 III with the upcoming (“don’t ask when”) 4.6.0 release that contains the latest VoLTE/CLAT fixes. I have a Telia (Finland) SIM card in slot #1 of the phone. I am located in southern Finland.

As far as I can see:

  • VoLTE phone calls work fine
  • Internet access in 4G network works, too - also during VoLTE calls

After forcing the phone to 2G or 3G network (but Telia will ramp down 3G in the next months):

  • phone calls keep working
  • Internet access does not work. The status remains ‘Enabled’, it never gets ‘Connected’. Lack of Internet access over 2G may not be a major issue since 4G works.

I had a problem in munich airport not getting connection at all, no mobile data, no sms, nothing…

After I did that “ofono removal and reboot” i got 4g briefly but then lost it
– and finally I noticed the case was after I enabled mobile data roaming things broke.

(There is 'NO roaming for mobile internet connection" thread where I comment more of that)

And now, at home network I also have mobile data roaming disabled – and 4G is not so hard anymore.

2G is still never.

The interesting thing, probably coincidence, is that wherever there is no 3G network I have these problems. When I was in Austria, phone connected to 3G and 4G networks “as it used to be”. Here in Finland, there i Munich airport and last summer in Crete I never saw 3G networks (in ui, or in cellmon)… but I wonder how on earth that could make a difference…

Later in this post, you wrote that 2G does not work on your phone. If this is the case and if you have “4G calling” disabled and if your operator does not have the 3G service anymore, then it is clear that phone calls can not work.

Would it be possible to uninstall these two apps to see if that would change something? It is probably a fuzzy idea.’

Have you ever tried the builit-in CSD test tools?
You would go “All tests > RF function check > 2G”. Pass or fail?

Tried first CSD test tools 2G connection → Fail

(and 4G pass – immediately after 2G test)

then devel-su and rpm -e patchmanager and reboot

after reboot could not get (even) 4G up. rebooted again.
Tried CSD test tools, 2G Fail, 4G either fail or just kept searcing

After 5-10 minutes got 4G connected

CSD test tools: 2G fail, 4G immediate pass – but then suddenly it went to ‘Searching’ mode.
Waited a long while. when swiped back, saw both sim1 and sim2 and 4G came immediately.
Retried 4G test and pass came immediately.

When I stopped CSD tools use – suddenly, 4G disappeared – only sim1 enabled.
SInce saw that sim2 there, went to enable sim2 – 4G came immediately – disable sim2 – 4G disappeared (sim card in sim slot 1)

Uptime now 33 min – disabled sim2 – 4G disappeared. will wait a while whether I get 4G back witnout enabling sim2

I still have situations installed (but “backgtound application” disabled – will try removing it later – have to see how/whether that “background app” gets removed…)

uptime now 37 minutes – 4G not up yet (i resist temptation to do that “ofono files removal”)

[edit] 49 min: no 4G – will try enabling flight mode and then disabling it and continue waiting

[edit2] 10 sec in flight mode – immediate 4G after disabling flight mode (only sim1 enabled)

– to be clear I have only one sim card, that is installed in slot 1 – in “enabling sim2” i mean enabling the slot2 in settings even there is no sim –

Moved sim card to slot 2. Tried the same things as yesterday, and same behavior (in all cases!)…

The “new” thing is that I could not get VoLTE enabled (would not register).

Moved sim back to slot1, after booted and both slots enabled pretty soon 4G connection,
with VoLTE registered (I can haz fonecalls!) came up!

I also have issues with my network since a longer period of time. I am in germany and even switched my telephone provider to vodafone since someone in the forum wrote that this works for him. But this changed nothing and my phone also needs some time to reconnect to the network… :frowning: