Wifi Calling not working on on of two phones on contract

[Aircub128]

I have two Phone a Iphone 16 and Iphone 15 both running IOS 18.5. The Iphone 16 has stopped wifi calling. I have done all the normal resets, reboots, and even reloaded a new esim into the phone, but still no Wifi Calling. If I put them both into airplane mode the 15 has wifi calling the 16 does not. both have wifi calling turned on in the esim settings.

I have contacted support and they say it must be the phone, contacted Apple and they say its Three

I need Wifi calling as the phone signal is 1 bar or nothing most of the time. 

Any ideas would be appreciated 

[Paddiewack]

Do you know what;I couldn’t have put it better myself. I too called non business customer service yesterday and there was no indication from them that this was anything but a phone issue. It rankles me to have to go to the status page of a Three mvno (ID Mobile) to get ANY information. That can’t be right. 

[jr0]

@Aircub128 @Midorie check this other thread here 

Aparently from the idMobile community link that @Geluk posted, Three and Apple are aware and working on resolving the issue. I quote
"17:00 - 3UK technical teams continue to with Apple to work on resolving the issue. Thank you for your continued patience, and we’ll continue to keep you updated."

[Midorie]

I have the exact same issue after the carrier update Wifi calling stopped working instantly on two phones. I did call Three Not even able to gain agreement of the issue, even explaining it very slowly. This is definitely not a phone issue is definitely the network. I have several phone lines on my device and Wi-Fi calling works fine when I enable those networks.  Where I live, I get one bar signal or no signal inside the house so Wifi calling is really useful. I do not see anything that we can do as customers until they push another update.  The Three customer support were like no we don’t send carrier settings. Update… 

One thing I will say you can try it just going into settings general about When you do that, the phone does actually look for new carrier settings. That way you won’t have to wait until they push it.

If anyone can, please post if you can hear any news about resolution for this from Three, that would be fantastic and have a great day. 

[Aircub128]

Spent most of yesterday afternoon on chat trying to get this Wi-Fi calling sorted. They even sent me a new eSIM but that did not cure the problem.Spent most of yesterday afternoon on chat trying to get this Wi-Fi calling sorted. They even sent me a new eSIM but that did not cure the problem.I’ve confirmed with them that this problem also occurs on different routers and networks so they can’t blame that all this happened after the Carrier update, but typical Three deny all responsibility.

Or you could hope is that some of the tech guys also use Wi-Fi calling at Three as that’s the only way it will get sorted if it affects them.

[Paddiewack]

As a long standing customer I’m inclined to agree with your last paragraph. 

[jr0]

Sorry I'm not very familiar with iPhone settings, but does the Carrier update has a version number? And what is it? and what was previously?

[Paddiewack]

It’s Three 64.1! Not something I particularly look at on a day to day so can’t answer the second part of your question but it’s absolutely too much of a coincidence that WiFi calling has become unavailable for some people following the update.

[jr0]

Thanks. I agree it's too much of a coincidence.

@Aircub128  @Midorie what is/was your version of carrier settings?

I always understood the WiFi calling being controlled by the phone itself not so much from/by the network. I also don't know wether the carrier settings influence or control the WiFi calling? and I was not sure who develops/creates the carrier settings but it looks like in the UK it is the Carrier or network operator/provider, so Three.

[DRMclean]

Yes, the iPhones support Wi-Fi calling as a basic function of the hardware/software, but the network provider also has to make the service available. Some networks for instance don’t offer Wi-Fi calling as part of a PAYG contract. That’s why I use Three - they do offer it on PAYG sims.

[Paddiewack]

I can confirm that since the recent carrier update WiFi calling has stopped working on my iPhone. I’ve tried all the usual remedies and am in the same location (home) as per usual. If you look at the carrier update it facilitates voice/sms and rcs (messages). No mention of the ip carrier needed for WiFi calling.