Issues with phone calls on Sony Xperia 10 III

Hi everyone!

I hope anyone can point me in the right direction or has had/solved a similar issue: inbound and outbound calls are not working on my phone.

When I try to call someone:

  • after starting, the phone shows a 4G connection
  • when initiating an outbound call (sim card 1, vodafone.de, sim card 2 not used) the network icon in the top status bar of the phone disappears
  • on the other end of the line the call is not coming through, i.e. no phone rings
  • after an outbound call, the mobile network is not available some a minute or so, then it is again set to 4G

Now when receiving an inbound call:

  • before dialing the phone again shows 4G
    -when the call (supposedly) reaches the sony modile phone, the mobile network switches to 2.5G
  • the sony does not ring
  • the vodafone mailbox takes the call
  • after some time the sony does not show 2.5G anymore, no mobile network for some seconds (half a minute)
  • then 4G is available again and an SMS notification from vodafone mailbox ois received that there was a missed call.

SMS is working (also outbound).

When i turn off WLAN, and I only have 4G as a network, datatransfers for browser, messenger etc. is not working, even if there is no “no network” message.

I have installed Sailfish OS on a new phone, which I was running a day before with a SIM card and I used all the services (GPS, Phone call in- outbound, networing with/without WLAN etc.) for a day before installing the Sailfish OS. Everything worked on the phone.

The original installation was OS 5.0.0.72. I already had issues with hone calls there

Today there was an update to Sailfish OS 5.0.0.76(Tampella), and the behaviour as described above, I hoped it would be fixed :slight_smile: …..

So if anyone had such issues or has an idea in what direction a fix could go, I would appreciate any tipps!

Anyway: thanks in advance and a great weekend :slight_smile: to you.

Regads
Jan.

VoLTE should work on Vodafone DE according to

Is the 4G calls / VoLTE switch in Settings > Mobile network on?

Hi Keto, thanks for you quick reply! This was actually the point, I hadn’t enables Voice over LTE, but it seems you have to enable it.

Now, phone calls are working!

Thank you a lot and have a good day!

1 Like

Actually Vodafone DE on a 10III should work regardless of VoLTE.

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Man, that is new. It does not work anymore without LTE. You are right. They must have changed their settings. Next time I am in Poland I will see what happens there. Vodafone had VoLTE only activated for your domestic network. This could kill roiaming,