What is the Network Provider and iOS version on the iPhone where WiFi Calling is problematic, @haroldjwright?

Settings > General > About (scroll down to Network Provider).

​@andewhite 

Network Provider = iD 64.2

iOS version = 18.5

Does the iPhone, which works with iD WiFi Calling have the same settings, ​@haroldjwright? 

Hmmm, can’t check right now because it’s my wife’s phone and she’s out. She should be back shortly and I’ll check then.

Are you both using the same iPhone model, ​@haroldjwright? 

Maybe check if WiFi Calling works with your iD SIM in your spouse’s iPhone? 

Also, to make matters worse, even though the phone has 2 bars of cellular signal it can’t make a phone call. It has full wifi so I think the phone is being “smart” and doing wifi calling instead. Even though wifi calling doesn’t work.

I guess I can solve this particular problem by switching off wifi calling. But at home my cellular signal fluctuates between 1 bar and zero bars. So I really need wifi calling to work.

Yeah, I rely on WiFi Calling at home, in my mobile not-spot, ​@haroldjwright. 

Although inconvenient, I’ve found the most reliable way to use WiFi Calling with an iPhone is as follows:

1. Turn on Flight Mode
2. Turn on Wi-Fi

The downside is having to remember to turn off Flight Mode when leaving home. 

Perhaps try forgetting your home Wi-Fi network, on the problem iPhone, then create a new profile for your home Wi-Fi.

My wife’s phone, which is also id mobile, which was working with wifi calling, also has:

Network Provider = iD 64.2

iOS version = 18.5

However, when I went to Settings > General > About it prompted me to update my network settings. Which I (stupidly?) did. Now wifi calling doesn’t seem to work on her phone either. so did it update to 64.2 and that broke it??

So now I have 2 phones where even if I:

1. Turn on Flight Mode
2. Turn on Wi-Fi

wifi calling does not work.

With flight mode on and wifi off both phones now seem to be making the call but you never hear ringing. After about 20s the call fails.

OK, bit more info. It’s not 100% not working. It’s flakey. It’s so flakey that it may as well not be working at all.

On both phones (airplane mode on, wifi on) I tried making 10 calls to a 3rd phone. Mostly it just looks like its trying to make the call, but you never hear ringing on the outgoing phone and then it disconnects with failed call. Sometime on the receiving phone it rings once, or doesn’t ring but says it got a call, or even a few seconds after the phone making the outgoing call says call fails the receiving call says it got a call.

Generally a bit futzed. I’ve checked the wifi network - 9ms ping, 44Mbps down, 19.5Mbps up which should be fine.

Over to id mobile I think (to fix things with apple maybe)?

Can you please re-check the network provider on both iPhone devices - thank you.