VoLTE provider support

If you’ve been brave enough to enable VoLTE support on your Sailfish OS device, please share your experiences by filling out your provider details in the table. You can participate in the VoLTE beta testing by purchasing Sailfish OS for your Xperia 10 II or Xperia 10 III here.

Please use ticks ✓ crosses ✕ and replies for any additional notes. Place a tick if you see the 4G indicator remain in the status bar of your phone for the duration of the call or SMS delivery, or a cross otherwise.

If you can test your device in android put an a✓ where it works. If it works in Android, but not SF, put x a✓ if it doesn’t work in Androids, put a✕

Device model Date tested Registered
Voice in Voice out SMS in SMS out
AT Magenta 10 II 2022-10-01
AT A1 Mobil 10 III 2022-05-30
AT Hutchison 3 10 III 2022-05-31
AT Spusu/Mass 10 II 2022-07-14
AT HoT 10 III 2022-07-14
AU Optus 10 III 2022-07-14
AU Telstra 10 III 2022-07-14
BG Yettel ††††† 10 II 2022-10-06
BE Proximus † 10 II 2022-07-29
BR Vivo 10 III 2023-04-20
CA Videotron 10 II 2022-07-14 X
CH Swisscom 10 III 2022-05-19
CH Digitec 10 II 2023-02-05
CH Salt 10 II 2022-07-23
CH Sunrise 10 II 2022-08-06
CH Yallo 10 III 2023-12-21
CN China Unicom 10 III 2022-05-27
CN CMCC 10 III 2022-05-28
CZ Vodafone 10 II 2022-07-14
DE 1und1 10 II 2022-07-30
DE Aldi Talk 10 III 2022-05-25
DE Aldi Talk ² 10 II 2022-10-04
DE Congstar 10 III 2022-05-18
DE Norma(Telekom) 10 III 2022-05-19
DE o2 10 III 2022-05-19
DE o2 10 III 2024-05-10 X X
DE o2 10 II 2022-10-05 x
DE Telekom 10 II 2022-07-14
DE Telekom 10 III 2022-07-02
DE Vodafone 10 II 2022-07-23
DE Vodafone 10 III 2022-05-19
DK Telenor dk 10 II 2022-07-15
EE Elisa †††† 10 II 2022-08-16
ES Movistar 10 III 2023-11-20 ✓a✓ ✓a✓ ✓a✓ ✓a✓
ES Digi Mobil (Movistar antennas) 10 III 2023-12-20
FI DNA 10 III 2022-09-06
FI Elisa 10 III 2022-05-19
FI Elisa 10 II 2022-10-01
FI Telia 10 III 2022-05-16
FI Telia 10 II 2022-07-15
FR Orange 10 III 2022-05-16
FR Orange 10 II 2022-07-14
FR Orange (Sosh) 10 III 2022-05-31
FR Free Mobile †††††† 10 II 2024-05-16
FR Free Mobile 10 III 2022-07-24
FR RED by SFR ††† 10 II 2022-07-20
FR RED by SFR 10 III 2023-02-10
GR Q Telecom 10 III 2022-06-10
HK 1010 10 III 2022-06-02
HK Smartone 10 III 2023-02-28
IT Vodafone 10 III 2022-05-21
IT WindTRE 10 III 2022-05-23
IT Iliad 10 II 2022-07-18
IT Iliad 10 III 2024-01-05
IT TIM 10 III 2023-02-14
IT Postemobile 10 II 2023-03-20
IN Reliance JIO † 10 II 2022-09-08
LT Bite 10 III 2023-10-02
LT Telia 10 III 2023-01-24
LT Tele2 10 III 2023-01-24
LV Tele2 10 III 2024-02-19
NL Ben 10 III 2022-06-15
NL T-Mobile 10 III 2022-06-01
NL Vodafone 10 II 2022-08-03
NL Vodafone 10 III 2022-06-15
NO Phonero (Telia) 10 II 2022-07-18
NO Phonero (Telia) 10 III 2022.09.01
NO Telenor 10 III 2022-07-14
NO Chilimobile (Telia) 10 III 2024-02-04
NZ 2Degrees* 10 III 2022-05-24 a✕ a✕ a✕ a✕ a✕
PL Play 10 III 2022-05-19
PL Polkomtel***** † 10 II 2022-07-24
PL Polkomtel***** 10 III 2022-07-30
PL T-Mobile 10 III 2022-05-31
PL T-Mobile 10 II 2022-07-15
PL Orange 10 III 2023-05-04 ✕a✓
PR T-Mobile 10 III 2022-06-03
PT MEO 10 III 2022-08-02
RO Vodafone 10 III 2022-10-16
RO Orange/Yoxo 10 III 2022-10-18
SE Fello (Telia) 10 III 2022-05-18
SE Fello (Telia) †† 10 II 2022-07-17
SE Telavox (Telia) †† 10 II 2022-07-17
SE Telia 10 II 2022-08-03
SE Telia 10 III 2022-05-29
SE Tre 10 III 2022-07-17
SE Vimla! (Telenor) 10 II 2023-01-31
SI A1 10 III 2022-10-12
SK 4ka (SWAN) 10 III 2022-05-19
TN Ooredoo 10 III 2022-10-23
UK EE 10 III 2022-05-18
UK Lebara 10 III 2022-06-23
UK Lycamobile 10 III 2022-06-10
UK Three 10 III 2022-07-15
UK Three † 10 II 2022-07-15
UK Vodafone 10 II 2022-07-15
UK Vodafone 10 III 2023-11-02
US Verizon 10 II 2022-07-19
US Verizon 10 III 2022-06-22
US ATT 10 II 2022-07-19
US ATT*** 10 III 2022-06-22
US US Mobile 10 II 2022-07-19
US T-Mobile**** 10 II 2022-07-19
US T-Mobile**** 10 III 2022-05-21
US Google Fi 10 III 2022-06-07
US Red Pocket GSMT (T-Mobile)**** 10 II 2022-10-11

*10 III issue, BV9900 works!
** Internet 4G not working when VoLTE is activated
*** A demand letter via lawyer may be necessary to get the device whitelisted
**** Requires modem.conf mapping. Some 10 II users experience being kicked off the network, see below.
² Behavior changed in
***** Requires sending an SMS to turn on VoLTE
† Requires modem.conf mapping.
†† Requires service_provider_sim_configs.xml modification.
††† Requires modem.conf mapping.
†††† Requires modem.conf mapping.
††††† Requires modem.conf mapping.
†††††† Requires modem.conf mapping.


That’s my provider, and for some reason an incoming call drops the connection to 3G, while everything else stays in 4G. But maybe we need another column to describe any crosses used!

Shouldn’t the ‘Registration’ table column have the correct name ‘Registered’? There are two parameters in the properties: ‘Registration’ and ‘Registered’. ‘Registration’ is set to ‘auto’ by command, ‘Registered’ should be ‘true’, if VoLTE is working properly, right?

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You’re right, it should have been Registered. Thanks @lhodas for highlighting it, and @abranson for fixing it!

VoLTE itself seems to work fine with my Provider(Norma/Telekom DE) but my mobile data is messed up. If VoLTE is enabled, i loose internet access after every phone call, airplane mode, switching wifi off etc. Only disabling and enabling VoLTE fixes this problem.

Should i file a bug report?

Yes, please do @miau, that would be appreciated.

The 10 III Android 12, does not work 4G voice.
My Blackview Android 10 chinaphone works perfectly VoLTE and VoWiFi.
Neither is in the operators published whitelist, so it seems unlikely that it is a whitelist issue at the operators end.

Found this but the rest of the thread didn’t show the OP getting the phone working…

Most of the xperia phones that come into NZ are Hong Kong sourced, and the stock firmware doesn’t support volte. Changing to the SEA firmware makes the volte toggle switch available

Android version after OTA is “62.1.A.0.550 release-keys”

@flypig Is SF using the installed android or completely replacing it? As my version of Android appears to have disabled VoLTE, will SF also be disabled?

I have added extra table options for testing android volte and vowifi

There are elements of Android (drivers) that are still used by Sailfish OS, but in this case I wouldn’t be able to tell you whether the disabled VoLTE in Android would transfer over to the Sailfish side I’m afraid. I’ve asked internally in case anyone is able to help.

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@crun Did you check that VoLTE was enabled in the Android settings?

@flypig FWIW, I installed SFOS on my X10III without having a SIM card in it first, nor touching the VoLTE settings. VoLTE works fine!

(I did, however, upgrade to Android 12, stuff happened, downgrade to Android 11 using Emma, more stuff happened, and the the flashing worked.)

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It does not show up as an option. (not even greyed out).
Same as reported here , where replacing the fw doesn’t make it appear

Same here in France. VoLTE doesn’t appear in Android settings (and in SFOS doesn’t register).
However, VoWifi option was available in Android and can be activated.
Though, on my other Asus Android phone, VoLTE doesn’t appear either currently, so I am not sure if it’s carrier related or not. I’ll see if I can try another carrier sim (that is tested with a working VoLTE phone) and see if that changes anything.

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The VoLTE setting depends on the manufacturer modifications, too.

The question is: What are those modifications?

Different region firmwares don’t fix it.
It doesn’t appear to be a whitelisting issue
Generic Chinaphones work, brand new, latest Android Sony’s don’t.



VoLTE works in Austria with my provider A1 Mobil.

Registration: ok
Voice incoming: ok
Voice outgoing: ok
SMS incoming: ok
SMS outgoing: ok

4G indicator persists across all tests.

Unfortunately I can’t edit the wiki entry yet. I haven’t been registered in the forum long enough.
can someone else expand the wiki entry?


Thanks for addition @bardoftruth, I’ve added in a row on your behalf.

thanks! :slight_smile:

I have SIM cards for Magenta / T-Mobile Austria and Hutchison 3 Austria

With this I can test all major Austrian providers.
I hope I’ll get around to testing them later today.

Superb, thank you @bardoftruth! Post them here and I’ll add them in, if you’re not able to updated the wiki directly yourself.

Got VoLTE activated from my carrier and working on Android correctly.
On SFOS, it registered but a few issues : no Internet 4G at all, and receiving calls switches to 3G (but not outgoing). The rest is working fine.
I updated the line in the first post.

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I have now tested Hutchison 3 Austria.
VoLTE works (voice&sms incomnig&outgoing)

Sorry but I can’t test Magenta / T-Mobile Austria. VoLTE is not activated in my contract

I have already edited the wiki entry for Hutchison 3

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Glad you got the same result as me on Orange Fr. They’re the same network and should be the same config. I think there’s something wrong with that config in the firmwarethough, as I managed to get 4G incoming calls on the X10ii with a bit of hacking.

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