VoLTE on the Xperia 10 II - filling in the gaps

I’ll give that a shot this afternoon. Thank you!

A quick note of thanks to @abranson to say that this worked – the packages updated – and I managed to send and receive an SMS and make a phone call. But I still can’t receive calls, and VoLTE still isn’t enabled, and no toggle is showing up in Settings. Plus it keeps falling off the network, especially when someone tries to call me. So I am going to attempt a full rebuild from EMMA on up to see if this hardware is salvagable before I write it off.

A quick question as I will now be flashing directly to 4.5.0.25–do I go with the original Android image that shipped with the 10ii (something like 8 or 9, I don’t remember) or should I start afresh with Android 11?

Thanks again, community.

Did anyone have any luck with Telstra in Australia? S38.1

I tried several different modem configs and now after like the 10th reboot i am giving up. So no calls in the “4G only” regions.

Back on the N900 we had a SIP client … the days …

I’ve got running VoLTE on French provider Free mobile (S8683.1) using the generic modem configuration file, see Add modem config for French provider Free mobile by dcaliste · Pull Request #915 · sonyxperiadev/device-sony-common · GitHub

@abranson, I don’t know if it’s the right place for PR ?

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Hi,
Does anyone have a working configuration for the provider O2/Telefónica Deutschland?
Getprob returns modem S77.1. There is a config for this which refers to the file mcfg_sw/generic/euro/tef_o2/vlvw/en/mcfg_sw.mbn.
However, the file does not exist. The directory “euro” does not exist, only “EU”. There is a .mbn under mcfg_sw/generic/EU/Telefonica/Commercial/DE/mcfg_sw.mbn, but VoLTE does not work completely with this file either. Registration works, as do calls at first. There is no ring-back tone, sometimes calls do not go through and the phone app crashes, sending SMS does not work.
But I’ve already been this far with the original config (which doesn’t exist).

Can anybody help?

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Hey,
i also have an Xperia 10 II, and my provider is also O2 Germany, i can confirm no ring back on VoLTE, that calls are not going through, take forever to go through, also sometimes network connection is going lost when trying to call someone, and finally sms will not pass, if VoLTE activated. But i did not change any settings, so maybe that might not be helpfull for you…