Feedback needed about VoLTE on 2025021100 in Beta/Alpha for 9th gen Pixels

orly

Pixel 8a
2025021100
IPv4/IPv6 (dual)

VoLTE (4G only, Wi-Fi off)
Calling works
SMS works

VoWiFi (Airplane mode on)
Calling works
SMS does not work: "Can't send message with _, error 0" and "Can't send messages in Airplane mode"

VoNR
Not sure how to test VoNR

chenxiaolong

Pixel 9 Pro XL:

Carrier: T-Mobile USA
Network type: IPv6

While on kernel 6.1.126 (pre-upgrade)

VoNR: Works
VoLTE (via LTE-only setting): Works
VoWIFI (airplane mode + wifi): Works

While on kernel 6.1.128 (post-upgrade)

VoNR: Works
VoLTE (via LTE-only setting): Works
VoWIFI (airplane mode + wifi): Works

I can't test SMS at the moment.

Object_11

Pixel 9 fold. 2025021100
Airplane on:
-- VoWiFi works
-- RCS works
-- ipv6+ipv4
Airplane off:
-- VoLTE works
-- ipv4

Koodo Mobile.

ToughDBlue

Pixel 7
On the latest update and all works as expected, LTE only, Wi-Fi Calling only, and 5G calls and texts. Mint Mobile.
I do want to mention though that I opened an issue on GitHub a couple weeks ago after installing GOS for intermittent issues where I have to disable and then enable Wi-Fi Calling in order to be able to call or text. Is this issue being looked at as well?

Eagle_Owl

Pixel 9 Pro XL
Dual IPv4/6
VoLTE working – LTE only mode, same with 5G NSA
WiFi w/airplane mode – call/text working
Build 2025021100
All the above still works as in the versions before

thmf

I'd be happy to help, but I don't have a 9th gen Pixel.

xxx

Pixel 6
VoLTE working – LTE only mode
WiFi Call working on 2 routers (one with IP4 the other one with IP6)
Build ....21100

All fine so far.

Franco

Late feedback, all good on my side:
Device: Pixel 9
GrapheneOS: 2025021100
Carrier: IPv4/IPv6
Preferred network: LTE only
VoLTE: enabled
Voice calls work
WiFi Calls works

girafy

@GrapheneOS
I am having issues making calls and I found this post so i think it might be related.
In short I am not able to make nor receive calls. It hangs up automatically as soon as I receive or make a call.
After turning off VoLTE it just keeps dialing endlessly without ringing.

Device: Pixel 9 pro xl
GrapheneOS: 2025030900
Carrier: tmobile
Preferred network: tried all
VoLTE: on/off
Voice calls do not work
WiFi Calls do not work (tried also turning this off)

Berlino

girafy
I had the same problem some months ago and for me it helped to un-check 'ims'-option in APN-settings -> APN-type. Calling via VoWiFi/VoLTE works as intended for me after doing this. Maybe worth a try and tell if it solves your problem.

girafy

Berlino
Thank you for your reply!
I am struggling to find the APN settings 😅

Berlino

girafy
You'll find it und er settings > network & Internet > SIM cards > your SIM > in settings menu of your SIM find APN settings at 3rd row from the bottom.
Select your APN profile, find 'APN-type' and open the sub-menue with codes and their check boxes. Look for 'ims' and un-check it if checked, switch flight mode on and off and you hopefully are able to call and reveive calls.

girafy

Berlino
Thank you kindly for the instructions! I did not know it was clickable.
The ims was deactivated so I reactivated it and it seems to be working now 😅

Thank you again for your help!

Berlino

girafy
Fantastic, glad I could help. Although for me it was the other way around, the function is the important part.

girafy

Yeah I was out of options so I activated it just to see if it would solve the issue and tada it worked 😅
BTW this is the first time I had such issue after 4 years of graphene use but I had changed operator recently and it was working just fine until the last stable update, so maybe this operator is too picky?

Berlino

girafy
That may be with the operator, however now you know where to look for, when calling is broken next time (hopefully not).

GrapheneOS

New threads should be made about any new issue. This thread was about changes in a specific release.

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