VoWiFi/Wi-Fi Calling on Redmi Note 10 Pro on 2degrees. Any 2degrees network team member lurking?

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andyit

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#324337 30-Mar-2026 09:21

Hey guys

I am having a genuinely frustrating experience I'm hoping someone here can help with.

I have a Redmi Note 10 Pro on 2degrees. When 3G was shut down my phone couldn't make calls despite being VoLTE capable. A quick dialer code (##86583##) sorted that and VoLTE has been working perfectly ever since — so the IMS stack is clearly functional on the network side.

The problem is VoWiFi. I have great WiFi at home but poor cellular signal, so this isn't a nice-to-have — it's actually important for me. The phone is hardware capable of VoWiFi, the Wi-Fi Calling toggle is enabled in settings, but calls fail every time in airplane mode + WiFi with "turn off airplane mode or connect to a wireless network."

I've done my homework. Checked the carrier config on the device and found:

carrier_wfc_ims_available_bool = false

carrier_default_wfc_ims_enabled_bool = false

This tells me it's a provisioning issue on 2degrees' side — my IMEI simply hasn't been whitelisted for VoWiFi. I've spent three weeks going back and forth with 2degrees support explaining exactly this, supplying my IMEI multiple times, and getting increasingly generic and incorrect responses — including one from tier 2 support which took 3 weeks to reply telling me my device doesn't support VoLTE, which is demonstrably wrong since I'm using it right now.

Their final response is that my device "is not currently supported on our network" for Wi-Fi Calling — which I understand is likely a policy/approved device list issue rather than a technical one.

So — is there anyone from 2degrees' network team floating around here who could either confirm whether non-approved device provisioning is possible, or point me in the right direction? I'm not asking for anything unreasonable — just an IMEI whitelist entry that a network engineer could probably do in five minutes rather than the probably hours so far for the tier 0ne support.

Alternatively if anyone has successfully got VoWiFi working on a non-approved device on 2degrees or any NZ carrier, I'd love to hear how.

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#3475392 30-Mar-2026 09:47

how about [*#*#869434#*#*] from the latter part of this - how-to-enable-volte-on-your-xiaomi-phone?

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#3475393 30-Mar-2026 09:50

nitro:

how about [*#*#869434#*#*] from the latter part of this - how-to-enable-volte-on-your-xiaomi-phone?

@Nitro they mentioned VoLTE is working

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#3475395 30-Mar-2026 09:52

@andyit have you tried your SIM card in another handset from the 2degrees approved list and tested Wi-Fi calling? This should be first step before contacting the carrier

andyit

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#3475399 30-Mar-2026 09:57

@Linux Thanks for the suggestion, but this wouldn't prove anything useful in my situation. The issue isn't with the SIM or my account settings — it's that the carrier config pushed to my device shows carrier_wfc_ims_available_bool = false, meaning 2degrees' provisioning server is explicitly telling my phone VoWiFi is not available. This would be the same regardless of which SIM is in the phone. An approved device would either have a different carrier config bundle or be whitelisted at the IMEI level. What I need is someone who can confirm whether 2degrees can manually provision non-approved devices for VoWiFi, or has done so successfully.

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#3475402 30-Mar-2026 10:00

@andyit Then 2degrees is not supporting the handset and to be honest you are on your own - Sorry to say but no carrier including 2degrees is going to support you in getting the handset working on Wi-Fi calling

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#3475403 30-Mar-2026 10:02

andyit:

What I need is someone who can confirm whether 2degrees can manually provision non-approved devices for VoWiFi, or has done so successfully.

Zero chance

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andyit

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#3475406 30-Mar-2026 10:15

That would seem rather restrictive as it's more a case of not disabling the feature rather than helping set it up given the phone is quite capable of VoWiFi. Do you work for 2degrees?

MrGadget

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#3475412 30-Mar-2026 10:23

Linux:

nitro:

how about [*#*#869434#*#*] from the latter part of this - how-to-enable-volte-on-your-xiaomi-phone?

@Nitro they mentioned VoLTE is working

Just a note, this is not the VoLTE code, this is the code to enable WiFi calling. The second part of this page does cover this.

https://hardwired.pbtech.co.nz/article/2673/how-to-enable-volte-on-your-xiaomi-phone

Any comment made here is my own and should not be taken as that of my employer.

quickymart

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#3475414 30-Mar-2026 10:27

andyit:

That would seem rather restrictive as it's more a case of not disabling the feature rather than helping set it up given the phone is quite capable of VoWiFi. Do you work for 2degrees?

At a guess, you purchased this phone from somewhere else (not 2degrees)? Therefore it may not have the correct carrier profile on there to enable Wifi calling.

If so, it's nothing to do with 2degrees, and they won't be able to help you; the issue will be with the handset (some friends of mine have been down this road previously).

andyit

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#3475416 30-Mar-2026 10:38

Yes, correct — it's not a 2degrees purchased device. However I'd push back on the conclusion that 2degrees can't help.

The carrier config showing carrier_wfc_ims_available_bool = false is being set by 2degrees' own provisioning server, not baked into the handset. I know this because VoLTE — which uses the exact same IMS infrastructure — is working perfectly after a simple dialer code enabled it. The network is already talking to my device's IMS stack successfully for voice calls.

The question is whether 2degrees can extend that provisioning to include VoWiFi for non-approved devices. That's a network side decision, not a handset limitation. Has anyone had direct experience with 2degrees — or any NZ carrier — actually making that provisioning change for a non-approved device?"

Thanks for other code suggestions guys but I've been there already. VoLTE was enabled with *#*#86583#*#*. The other VoWiFi code I have already tried too. It's a provisioning issue rather than settings on the phone.

quickymart

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#3475428 30-Mar-2026 10:51

andyit:

The question is whether 2degrees can extend that provisioning to include VoWiFi for non-approved devices. That's a network side decision, not a handset limitation. Has anyone had direct experience with 2degrees — or any NZ carrier — actually making that provisioning change for a non-approved device?"

Thanks for other code suggestions guys but I've been there already. VoLTE was enabled with *#*#86583#*#*. The other VoWiFi code I have already tried too. It's a provisioning issue rather than settings on the phone.

They won't do it otherwise everyone would call up with some random handset they got from somewhere else and expect every single function to work. There are just too many phones/makers/models out there to cater for this.

As I said above, this isn't a provisioning issue - if so, 2degrees would be able to resolve this for you. I believe it comes down to the profile on the handset, and your device doesn't have the correct one for everything you want to work on it.

I'm not a mobile technician but Linux could probably expand on this a bit more than my knowledge allows.

My suggestion would be if you want to stay with 2degrees, just purchase a handset from them - at least everything is then guaranteed to work, and you have recourse with them if anything doesn't.

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#3475430 30-Mar-2026 10:52

andyit:

The question is whether 2degrees can extend that provisioning to include VoWiFi for non-approved devices. That's a network side decision, not a handset limitation. Has anyone had direct experience with 2degrees — or any NZ carrier — actually making that provisioning change for a non-approved device?"

@andyit it is not going to happen cause then if something goes wrong in the future then everyone will expect 2degrees to resolve other issues if any pop-up!

Carriers do extensive testing before approving a handset

nitro

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#3475431 30-Mar-2026 10:55

MrGadget:

Linux:

@Nitro they mentioned VoLTE is working

Just a note, this is not the VoLTE code, this is the code to enable WiFi calling. The second part of this page does cover this.

https://hardwired.pbtech.co.nz/article/2673/how-to-enable-volte-on-your-xiaomi-phone

yup. the second half has instructions to enable VoWiFi. not sure if it's worth anything, but could be something to try.

hio77

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#3475433 30-Mar-2026 10:56

2D did get VoLTE added into the profile as part of an update for the Redmi Note 14, VoWiFi required the unlock code to allow it through.

Aside from the dialer code I didn't need to do anything special to get VoWifi to be provisioned.

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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

andyit

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#3475441 30-Mar-2026 11:06

@hio77

This is really useful, thank you. A few questions if you don't mind:
- Was your Redmi Note 14 purchased from 2degrees or a third party?
- Which dialer code did you use to unlock VoWiFi — was it the same ##86583##* code that enabled VoLTE?*
- Did VoWiFi just start working immediately after the dialer code, or did you need to toggle any settings afterwards?
- Were you already on the 2degrees approved device list, or was this on a non-approved device?
The reason I ask is that I've already used ##86583##* which enabled VoLTE successfully, but VoWiFi still shows carrier_wfc_ims_available_bool = false in the carrier config.

I also tried ##869434## which disables carrier checking, enabled the VoWiFi toggle under SIM settings, and tested with airplane mode on and WiFi connected — but still get the error that I can't make calls. Trying to understand if there's a different code or additional step I'm missing that got VoWiFi actually registering on the network for you.

Also just to clarify your first point — when you say 2degrees got VoLTE added into the profile as part of an update, do you mean 2degrees updated their network provisioning to include the Redmi Note 14, or that Xiaomi/Redmi pushed a firmware update to the handset that enabled it? That distinction is important because if it was a 2degrees provisioning decision for the Note 14 specifically, it raises the question of whether they'd do the same for older Redmi models like the Note 10 Pro — especially given Xiaomi typically only pushes firmware updates for 1-2 years after release.

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