Wifi Calling ATT Sim - Xiaomi Mi A2 / 6X Questions & Answers

Hello all,
I would like to get wifi calling working.
Unfortunately it is greyed out in #*#*4636*#*#
I have disabled carrier check.
Does anyone have it working.?

Related

Does T-Mo disable wifi calling on their unlocked phones if using a different carrier?

I recently purchased an unlocked T-Mobile LG G4 that I am using with Consumer Cellular. I really like this phone, but it appears that T-Mobile has somehow disabled the wifi calling feature. I keep getting the message "wifi calling ER05 invalid sim". The sim is a Consumer Cellular card, and it's not the end of the world if I can't use the wifi calling feature, but I do wonder if there is anything I can do to make it work. TIA.
Wifi calling has to be supported and enabled by your carrier. I am on MetroPCS and since they are basically T-Mobile they support it, but I had to call support and have them enable it.

AT&T VVM, wifi calling settings

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. =(

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?

wifi calling works without carrier firmware

I bought a SM-N960U1 unbranded US unlocked model, and I immediately updated it to Android 9. THEN I inserted my T-Mobile sim, and I have wifi calling. I did all of this a few weeks ago, and I never really questioned it all until today.
I'm posting this now because I read that people cannot get wifi calling to work on their unbranded model unless they flash carrier firmware.
And this is what I've found. When I make a call while connected to wifi, I see the little wifi symbol on my phone symbol, as if the call is a wifi call. I have a toggle for wifi calling, which works! If I toggle wifi calling off and make the call again, no wifi symbol on the phone symbol. When I look in settings > connections, I do NOT have items to set wifi calling and VoLTE. However, I can search settings for wifi calling and I will find the Samsung 'Wi-Fi Calling' app (com.sec.unifiedwfc 6.0.33.47) RUNNING!
So, it seems I have wifi calling working on T-Mobile, with just the Samsung stock firmware and not the carrier firmware. Which is great! No carrier bloat.
I just tested my wifi calling by starting a wifi call and then walking out of wifi range, and it definitely works! At the edge of wifi range, the call broke up, handed over to the cell tower, and became noticeably less clear. I'm stoked to have wifi calling without carrier bloat.
I might investigate further if there are some settings I can toggle over adb (wifi preferred, etc)
It depends on the carrier. T-Mobile does support all of its services, including WiFi calling, on the N960U1. Some other carriers do not. Always check with your carrier before buying an unbranded phone.
I also just discovered that toggle button text is CLICKABLE, and I can access Wi-Fi Calling SETTINGS when I tap on the wifi calling toggle's text, which gives me the option to turn on/off wifi calling, wifi/cell preferred.
So I have Wi-Fi Callng, can change settings, all in the stock non-branded firmware of the SM-N960U1.
AWESOME!

Enable Wi-Fi Calling via Verizon on Unlocked Device?

Hello all,
I have an unlocked Moto G6 on Verizon on which I'd like to enable wi-fi calling. I called Verizon and they supposedly provisioned wifi calling to our account, but when I try to activate it via:
Phone App
Click the three dots on the upper right hand corner
Click Settings
Click Calls
Enable the Wifi Calling toggle
Wifi calling is not there. Also, when going to *#*#4636#*#*, wifi calling is greyed out and I can't toggle it on.
A preliminary Googling suggests that the unlocked Moto G6 is incapable of wifi calling because it does not have the necessary HD Voice and Wifi Calling software from Verizon. Supposedly the Verizon Moto G6 also has a different IMEI. However, it seems to me that if both versions of the phone have identical hardware, they should both be capable of wifi calling.
Has anyone run into this issue? Does anyone have any suggestions as to how I can enable wifi calling on my Moto G6?
at present verizon does not let any non vzw branded device use wifi calling.
which seriously sucks, but then again, we are talking about verizon, so...

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