Can't make or receive calls

ravachol

Just installed Ubuntu Touch on a Fairphone 4.

I can't make calls. It tries to call but there is silence and nothing happens.
Incoming calls result in a message being received that someone tried to call.

SMS and Internet works.

Fairphone 4
Ubuntu Touch 24.04-1.1
Hallon (Tre) is the (Swedish) Operator
voLTE on and off doesn't seem to make a difference.
3G no longer works in Sweden. The phone is set to 2G/3G/4G/5G.
The APN settings seem correct.

I've contacted the operator and they don't seem to know if Ubuntu Touch is supported. The only other low cost operator there is here also doesn't know they say.

idonthatevests

@ravachol Does this work on Android? Have you tried installing daily revision or 24.04.2? Just to be sure, did you enable 4G calling in APN settings?

ravachol

I now see that:

Calling over VoLTE is not supported, please check that this is not a requirement in your country.

It seems to be a requirement here in Sweden.

Source: https://devices.ubuntu-touch.io/device/fp4

ravachol

Anyone know if there is going to be a solution to this?

idonthatevests

@ravachol This information is outdated, Ubuntu Touch has VoLTE support and it has been stated in the development blog that FP4 has received VoLTE updates recently. It may still require polishing, or your device's modem doesn't support operator frequencies, it rarely happens.

ravachol

@idonthatevests Thank you. I switched to the daily channel (was on stable) but it didn't help.

ravachol

@idonthatevests said in Can't make or receive calls:

24.04.2

How would I install 24.04.2?

I changed the channel to rc but it's still on 24.04-1.1.

messayisto

@ravachol Probably you can use the ubports installer.

Keneda

@ravachol

Important question: what version of android was on the phone before installing Ubuntu Touch ?

ravachol

@Keneda It was Android 11.

ravachol

Is there some whitelisting or something that the carrier must do for it to work?

ravachol

Ok I found this:

"How do I know if VoLTE is working?
For VoLTE to work, the following conditions have to be met:

Your phone supports VoLTE on Ubuntu Touch.

Your carrier and your SIM card supports VoLTE.

Ubuntu Touch contains a VoLTE configuration for your carrier.

If the conditions are met, and the phone successfully establishes a VoLTE connection, the VoLTE logo will appear after your carrier name in the Network indicator."

My phone does not have the VoLTE logo so I guess, Ubuntu Touch does not contain a VoLTE configuration for my carrier. Does anyone know where I can access a list of supported carriers?

Rondarius

@ravachol
I had the same problem as you on a pixel 3A but on Tele2.
Because the sms/mms works means that you have VoLte on the phone. Here comes the problem, you are missing Emergance Calls over VoLte and your phone is blocked from making any phonecalls both incomming and outgoing.

https://pts.se/internet-och-telefoni/teknikskifte/

Internet and sms/mms still works on the phone.

I don't know if it is a missing feature that needs to be implemented in UT or it is a limitation in the hardware.

Rondarius

@ravachol
Did phonecalls work when the phone was on Fairphone OS/Android?

ravachol

@Rondarius

Did phonecalls work when the phone was on Fairphone OS/Android?

I don't know because I installed Ubuntu Touch first thing I did.

I tried calling 112 and it worked actually, I got a tone. Just normal calls don't.

Rondarius

@ravachol
I suspect that there is something wrong with the apn settings. Do you have one apn for internet and one for sms?

ravachol

@Rondarius

My APN settings look like this:

3 (enabled)
Internet and MMS

3 SE MMS (disabled)
MMS

Both settings are the same however, and enabling the second one doesn't make a difference.

APN
data.tre.se

MMSC
https://mms.tre.se

Proxy
mmsproxy.tre.se

Proxy Port
7899

Username
Blank

Password
Blank

I can press + and there is a third setting for LTE there, but I enter data there and press the checkmark, but it is not added to the list.

Rondarius

@ravachol
Make the first one only internet
And reboot the phone.

ravachol

@Rondarius I've done that many times.

I also tried enabling ims by running:

sudo ./activate-context 3
sudo systemctl restart ofono

but ofono set's it back to disabled when it activates.

These are the settings:

[ /ril_0/context3 ]
Name = IMS
Active = 0
Preferred = 0
Type = ims
Protocol = dual
AccessPointName = ims
Username =
Passord =
AuthenticationMethod = any
Settings = { }
IPv6.Settings = { }

I think I need to change carrier or maybe swedish carriers aren't supported by ubuntu touch.

ravachol

@Rondarius I didn't understand you at first. I did what you suggested and calls still don't work.