AT&T VVM, wifi calling settings - Huawei P20 Pro Questions & Answers

Hi. I wonder if any of you have successfully set up VVM and Wi-Fi calling or VoLTE. I live in US and I have a German version (C432) of P20pro with 2 AT&T sims. Could not figure out how to get them work.
Thanks in advance for any advice.

Did you ever get this working? I have AT&T as my US carrier and do not see a Wifi calling toggle in settings. =(

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Wifi Calling ATT Sim

Hello all,
I would like to get wifi calling working.
Unfortunately it is greyed out in #*#*4636*#*#
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May update enabled WiFi calling on my SM-N950F/DS (T-Mobile)

I have an international (gold) unlocked dual SIM and I thought I was hallucinating today when my phone got the May Android update and suddenly there was an option for Wi-Fi calling in Phone settings. I didn't think it would work but it definitely is at least on T-Mobile as I see "T-Mobile WiFi Calling" when I pull down the notification shade and calls work in airplane mode (with WiFi on).
Super stoked as this definitely didn't work before. Anyone else see this?
Why didn't wifi call work before?
I have a n950f and a German t-mobile sim
Wifi calling always worked
Reaper1337 said:
Why didn't wifi call work before?
I have a n950f and a German t-mobile sim
Wifi calling always worked
Click to expand...
Click to collapse
Different device than my SM-N950F/DS. Samsung didn't enable WiFi calling in settings in the dial SIM model until now that is.
Good to know, thanks!
after updates it doesn't show on my call settings. did you do anything different?

VoLTE/Wifi Calling LG V405QA

Has anyone figured out how to get wifi calling working? I've been looking for a third party app that will help, but I'm wondering if I just need to flash the 405UA fw on there. Can anyone tell me if that will work?
I have the same problem/question.
I did end up flashing the Verizon UA version, and at least for that carrier and where I live, wifi calling was lower quality than the carrier's. I know that doesn't really help, but I thought I'd update for you.
cavcagamgee said:
I did end up flashing the Verizon UA version, and at least for that carrier and where I live, wifi calling was lower quality than the carrier's. I know that doesn't really help, but I thought I'd update for you.
Click to expand...
Click to collapse
Thanks. I think I'd avoid all that as it is not that important to me. Cheers
BTW - for others, I am on ATT (via Red Pocket). R.P. says they support wifi calling and Volte on their GSMA (ATT) network. See here <https://help.redpocket.com/hc/en-us/articles/360022031312-What-is-WiFi-calling-and-can-I-use-it-with-my-Red-Pocket-service->. I had to call them to get wifi calling "enabled". But that still did nothing and in the phone's tech page (using USSD *#*#4636#*#*) it has never shown Volte or wifi calling provisioned.
I found this blog <https://gstylemag.com/2018/10/29/an-unlocked-lg-v40-is-both-amazing-and-not-on-atts-network/> and from the author says it just doesn't work. He also implies that the settings page for wifi calling is dynamically configured and that this item "disappears" when on ATT. So FYI.

VOLTE and WIFI Calling still not working - Vodafone UK

I still can't get wifi calling and volte to work here for me in the UK, do I need to do something? no options show up
salespalace said:
I still can't get wifi calling and volte to work here for me in the UK, do I need to do something? no options show up
Click to expand...
Click to collapse
Call your network provider and ask for the settings to be pushed to your phone.
They can't for some odd reason. maybe they're clueless

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