Since the update on 4.4.0.68, and enabled VoLTE I can’t hear a ringtone when I call one person (also Croatia T-mobile SIM), even though their phone is ringing.
Two phone numbers on TELE2 Croatia SIM, I can hear normal ringtone.
When using my Pinephone is the US after the 2g/3g shutdown (and regardless of what distro I’m testing at the time) I’ve noticed that not all network providers supply the ringback tone when using VoLTE. It’s pretty disorienting to listen to silence and waiting for a “hello” from the other end . . .
I have the same. When I try it with an android (same operator sim and settings, same position) U get a ringback tone.
Meaning 2 Phones, one Android, one SFOS.
Same Operator (Telekom.de).
Calling from SFOS to Android: no ringback tone on the SFOS device
Calling from Android to SFOS: ringback tone on the Android device.
There are generally two ways (responses) in a SIP/VoIP/VoLTE setting with implications how the ringback tone is supposed to be generated when calling a remote party. One is “Session Progress” (including early media) which not only signals to the local device that something is happening on the other side but also provides the audio data stream that can be played to the user - the other is “Ringing” which just indicates that the remote phone is ringing but requires the local device to locally generate the appropriate tones itself. Maybe one of them is poorly implemented which could help explain why some people have issues with missing ringing indication and others don’t. (but that’s pure speculation)
For me it’s not 100%, but maybe 50%. Sometimes I hear the calling sound, sometimes I don’t. It seems to be dependant on who I call (callee’s operator?).
Xperia 10 II Volte enabled and in a range of lte signal. In my case I can hear the ring back tone if the other party do not have volte. If they also does have volte enabled, there is no tone.
Thanks for all the reports on this. I’ve created an internal report and tagged it as “tracked”. We’ll do my best to post back here if there are any updates to report on it.
I could get ringback back by disabling settings->mobile-network->4G-calls as described in this thread.
This solution does not work with providers that enforce VoLTE thus a full bugfix is still needed.
Hi @Andrwe. Thanks for asking and sorry that you’re still experiencing this. I’m afraid I can’t give an update as I no longer have access to the internal bug database. However, the fact that it’s still tagged as “tracked” rather than “fixed” would suggest that work on a fix still isn’t completed yet I’m afraid.