C2 VoLTE provider support

In 5.0.0.43 release SI Bob SIM does register but Hot still doesn’t. Wiki updated. More tests follow.

5.0.0.43:

Country Provider Registered Voice in Voice out SMS in SMS out MMS in MMS out Compared
DK 3 x x x
DK Yousee

On my 10iii VoLte problems is almost reversed, except from MMS things work on 3’s network, but calls in and sms out does not work on Yousee network.

Please edit the first post with your info.

I have this ‘backup’ SIM from Swedish provider WiFog (Tre) where VoLTE doesn’t work at all.
Let me know if I can do something to fix it.
Here’s some screens from the NetMon VoLTE app.

Screenshot_20241220_085257_001.resized

Screenshot_20241220_090602_001.resized

Screenshot_20241220_090614_001.resized

Screenshot_20241220_085354_001.resized

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Roaming in Croatia works. ( network 219-2 )

That is, mobile data works, VoLTE does not register.
Calling (2G/3G) works.
SMS does not work.

Even with a ‘Sign in to network’ via Captive Portal browser, where my provider wants me to select a roaming plan.

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Please fill the first post Wiki table.

Sailfish OS version: 5.0.0.43
SIM provider and country: Blau.de, DE (Telefonica)
Network provider and country (if roaming): -
Number of SIM cards in use and in which slot: 1 / 1

Country Provider Registered Voice in Voice out SMS in SMS out MMS in MMS out Compared
DE Blau ?

Jolla C2 use the “o2 - de”-Profile

Edit: I filled this to the first post of Wiki table.

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What does “Not Registered” means in Settings? And selecton button is blinking.

It means VoLTE doesn’t work.

Sailfish OS version: 5.0.0.43
SIM provider and country: ORANGE BE
Network provider and country (if roaming): -
Number of SIM cards in use and in which slot: 1 / 2

Country Provider Registered Voice in Voice out SMS in SMS out MMS in MMS out Compared
BE Orange x x ?

I can’t test MMS
C2 is my first Jolla Device. Its seems working alright. I’ve got Storeman but Chum can not be installed.

Please add test info in first post so it’s not buried this deep.

It can. Directly. Don’t use it’s installer yet.

One more finding: SMS stopped working. Switching to <= 3G did not work. Flight mode and back did not work. Restart worked.

| FR | orange Pro; | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | Voice |
| FR | Auchan Telecom; | ✕ | ✓ | ✓ | ✓ | ✓ | ✓ |✕ | Voice
| FR | Coriolis | ✓ | ✓ | ✕ | ✓ | ✕ | ✓ |✕ | Voice

@Renzol @mbrazi_1 Please add the results to the first post as well.

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Cannot send or receive MMS messages

Country : Fr
Provider : CDiscount mobile (Bouygue telecom network)
Sim slot : 1
Phone : Jolla C2
OS : 5.0.0.43

SMS reception is ok but sending is very long.

Country : Fr
Provider : CDiscount mobile (Bouygue telecom network)
Sim slot : 1
Phone : Jolla C2
OS : 5.0.0.43

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Is there anything we/ i can do or try to make volte working? Or any commands that might show why its failing?

On my 10ii it is currently working but on the c2 it fails to register :frowning:

Provider: DE congstar (telwcom network)

Country : IT
Provider : Iliad
Sim slot : 1
Phone : Jolla C2
OS : 5.0.0.43

SMS works
Cannot send or receive MMS messages (checked twice the server center address is mms.iliad.it)
4G data transfer is stable but slow
4G VoLTE stays in registering and does not work

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This can work, but not in automatic mode/selection. On my C2 (5.0.0.43), this solution work : MMS setting for Bouygues Telecom and co (Fr)

For SMS and call voice, i resolved my problems : Network settings for SMS and voice calls for Bouygues Télécom and co (Fr)