@Mark it's back now.
The wierd thing is, it takes 12 hours to toggle one way or the other. Toggling it back on results in the "you can't have this" error message, but if you wait long enough it's back on anyway.
So, as things stand now, Wi-Fi calling is once again provisioned on my account (confirmed by the My Vodafone app and the web-based interface) but is still unusable because the settings in the phone allowing me to use it have disappeared since the factory reset that I was advised to do.
The timeline of events so far is:
14/12/2018: It is brought to your attention via this forum (see here) that there is a problem with constant notifications issued by Wi-Fi calling using the default notification tone regardless of the notification settings. The only way to stop this is to set the default notification tone to "silent" with the risk of losing notifications from apps that don't allow the user to override the notification tone used (stock Huawei e-mail app, for example).
24/02/2019: Screenshots of the process used to demonstrate the problem are provided (see here).
26/02/2019: @Natasha states the obvious. Of course coverage is patchy, that's why we need Wi-Fi calling in the first place!
26/03/2019: @Loz says: "Switch the notification to silent or deactivate Wi-Fi calling altogether" -- That's the whole point of this thread. You can't switch to silent and I don't want to deactivate the feature because I need it!
27/03/2019: @Adam says: "Sorry but this is new to us as well". Err... It was brought to your attention 3½ months earlier, during which time everyone has received recommendations to do exactly what we're saying can't be done because of a Vodafone-specific bug (otherwise identical handsets with branded firmware from other operators and unbranded devices don't have this problem), hence raising this topic in the first place.
28/03/2019: @Mark says: "Do a factory reset, this has helped others according to various fora". So I did a factory reset and guess what? All Wi-Fi calling features apart from managing notifications (which doesn't work anyway) are wiped from the phone.
08/04/2019: I report back saying that the other fora actually do not state that other users were helped but that Wi-Fi capabilities were wiped from their phones, as they were from mine.
10/04/2019: @TJ gets hold of the wrong end of the stick and asks me to switch Wi-Fi calling back on in my account. It never was switched off in the first place, it was still on throughout this process. What I no longer have is the feature on the phone to allow me to use this. See here.
10/04/2019: Just to see if it had any effect, I decided to remove Wi-Fi calling from my account and then put it back on (see here). There have been other occasions where the My Vodafone app and the web-based interface both tell me that something is switched on when in fact it is switched off or vice-versa. I've had to speak to a human to get that sorted. Anyway, bad mistake. The UI is broken. You never get the text message confirming this particular change (you get it for other account-related features) but the UI does reflect it, so I'm now wondering if any changes have actually happened?
So what we have is a bug report of which knowledge is denied despite forum members receiving advice to do specifically what they're reporting that they can't do. We then get new advice, acting on which makes things worse. I know that moderators are trying to help and doing what they can within the tight parameters that Vodafone will allow them, but please read and try to understand the information that you are being given and, if there's something you don't get, please ask for more information.
.png "Community Manager (Retired)"){kind=icon}
