WiFi Calling stopped working Galaxy S7 (Sept 2018)

[Absurdity]

Hi All,

This is not a question, but a description of an issue I recently had and it's solution - hopefully it helps others in a similar situation.

Issue: WiFi calling (and VoLTE / 4G calling) was set up and working fine, but suddenly stopped working in the afternoon on 8 September 2018.

Phone: Samsung Galaxy S7 (open market - not bought from o2, latest firmware updates installed)

Solution: Uninstall and Reinstall My o2 app.

Description: WiFi calling and VoLTE had been working as expected for a number of weeks now, but without warning stopped. It had previously been enabled via My o2 app.

I had made calls using WiFi in the morning of 8 September, but by evening it would not connect to WiFi calling.

Furthermore the WiFi calling option had disappeared from the settings menus. VoLTE was greyed out so wasn't allowed to turn it on.

My o2 showed I had both enabled on my account.

I disabled wifi calling and re-enabled it through my o2 (including waiting 24 hours and multiple restarts of the phone), but no luck.

So I started the phone in safe mode and WiFi calling was back! If I came out of safe mode the wifi calling disappeared again.

Looking at my app update history My o2 was updated on 8 September. I uninstalled and reinstalled My o2 and WiFi calling and VoLTE was working fine.

Either the update didn't install correctly for me, or there is a bug in the update process for the latest update, however the fix is pretty easy!

Hopefully this might save someone from losing all WiFi connection settings (as happened to me when o2 support asked me to reset all my network settings ) 

- Absurdity

[MI5]

Mine's still working and there's no where I know of where you can check for regional issues.

[DanDon]

My WiFi calling option has vanished today after working with no problems for several months. Have tried all the suggested fixes with no success. Hoping it magically reappears tomorrow!

[MI5]

There is a known issue with some accounts currently that o2 are working on.

[DanDon]

It's back 😀

[MI5]

[Cleoriff]

From previous posts it seems to disappear intermittently, then pop back up when it's ready..

[SteveR88]

It's back for me now - after I restarted my phone and had to switch Wifi calling back on..... !?
Wish this service was more reliable!!