5g hub ZTE mc888 won’t allow WiFi calling

[Rural]

We have recently switched to Three. We switched from the standard broadband to the 5g hub because we are very rural and our highest speed on the line was 5mb. With the hub we are getting the fastest broadband we’ve ever had. But here’s the problem: it won’t allow us to use WiFi calling. We rely on WiFi calling because signal in the house is awful (old house and very thick walls). WiFi calling worked for us before but won’t with this hub. Can anyone help us with this?

[Rural]

Yes it was definitely over WiFi. I had put on airplane mode and toggled the WiFi on. 

[Rural]

To be far it was a really old phone. We’ve just tried it with a Samsung Galaxy and it worked fine. Just need to get it working for iPhones please 🙏 

[Hagadol]

Has anyone found out if Three 5G Broadband on a ZTE mc888 supports Wifi Calling from other networks ?

[JonathanB]

Hi @Hagadol,

We've been investigating a few reports of this issue. Can you confirm which network provider, and which models of phone you've been having trouble with?

Thanks,
Jonathan

[Hagadol]

I am with O2.

iPhone 12 Pro Max - IOS 17.4.1

I get WiFi calling on other WiFi Networks, just checked this a few moments ago. 

[JonathanB]

Hi @Rural,

Thanks for your patience. I've checked in with some contacts in our Tech teams regarding this, and confirmed it's an issue which is under investigation.

As I mentioned before, 5G phones make calls over 4G, but that has no bearing on Wi-Fi calling, so I apologise for any confusion there.

We do expect the MC888 to support Wi-Fi calling, and some colleagues are trying to locate the root cause, and fix this.

Thanks,
Jonathan

[Ika82]

Hello,

we have same issue. The ok Three 5g hub (4 yo) was working for wifi calls but this new one we switched to won’t let us.

has this been investigated and resolved?

thanks

[Rural]

Unfortunately not. I’m still waiting for it to be sorted. They are really dragging their heels on this.

[Rural]

Is there a timescale on this? We are half way through a 30 day free trial with this hub and can’t continue with it if WiFi calling is not an option.

[JonathanB]

Hi @Rural,

I'm sorry, we've identified that there is an issue, and there's a team performing tests to try to track down where this is failing. There's no fix date yet, but I'm passing the info from this thread on to hopefully help speed things up.

If you do decide to return, and have any issues whatsoever in getting this sorted out with our support teams. Please let me know. Hopefully it's all sorted before it comes to that though.

The team investigating have asked me for the models of phones involved too, you mentioned these were all iPhones can you confirm which model number(s)?

Thanks,
Jonathan