Enable WIFI calling in SM-J730F - Samsung Galaxy J7 (2017) Questions & Answers

Hello ,
I have SM-J730F and my network provider supports the WIFI calling but I can't find this option in my phone settings, my Android is: J730FXXU4CSED, I followed all what I found online to use this feature but all what I saw was this feature was already there in the phone just they enable it, what I need to do to use this feature in my phone.
Thanks

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WiFi Calling on US Tmobile

I can not find the option to turn this on in the Settings menu unless I search for it. After searching & selecting it, I can enable WiFi Calling. Unfortunately as soon as I leave that screen the option turns off. Can anyone else get the function to remain turned on after leaving the selection screen? I am using a Tmobile SIM card. Also on Z.A.D's ROM v3.
I don't think tmobile supports WiFi calling for our phone. But ZTE is working with them to make this happen
T-Mobile WiFi Calling hasn't been added yet.
Thanks. Since I could enable it, I was thinking it was ROM related. Weird that I can't find the option in Settings without searching for it.

VoWiFi

Hello!
Newbie here. First post. Have been lurking around regarding Sony's refusal to unlock WiFi calling (VoWifi).
I have a Xperia Z3+ dual sim (E6533) and I am interested in WiFi calling because I don't want people to know when I am out of the country. Dialing 800 numbers (three work numbers I need to use are 800 only) also works when using WiFi calling outside the US. My previous Xperia was a unlocked t-mobile single sim model. It was great until it died. I didn't know that WiFi was a t-mobile only thing and now I am stuck with this dilemma.
I played around with the hidden access menu (#*#*4636*#*#) and I was surprised that WiFi calling is possible but deactivated (under phone info). Activating "Wifi Calling Provisioned" doesn't do any good, since it goes back to OFF once you access the menu again.
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WiFi Calling on Huawei P10 Plus (VKY-L29C432)

Hi,
Is there any chance to activate Wi-Fi Calling on this phone in PLAY (Poland)?
This option does not appear in the phone menu. I think there are some settings missing.
The service is enabled on the network operator and works without any problems on Samsung S8.
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I have rooted phone.

j730f/ds wifi calling problem

As I mentioned on the titile, I am facing a problem when I try to use wifi calling feature. There is an option on the scroll down menu, but when I tap it nothing happens. And the color of wifi calling is lighter than the others. I tried to open the menu with an app, but it showed empty. Is there a way to make wifi calling work?
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wifi calling on samsung galaxy s8 - Airtel India

Currently using Airtel sim on samsung galaxy S8. I'm facing some network problem in my area so I can't able to make or receive a call due to this problem. So I decided to use wifi calling feature. Now I came to know that wifi calling feature is not available in that list which was published by Airtel. Then I contacted airtel regarding this issue. They said that my mobile phone doesn't support Wifi calling. Then I have searched wifi calling feature on my phone. Its available. The thing is I cant able to disable or enable it. (I have attached screenshot of it )
Then I just switched my primary sim to JIO for checking whether wifi calling is working or not. Happly it's working fine on JIO sim.
Jio is supporting wifi calling why not Airtel..?
OS Version : Android Pie one UI 1.0 (using Samsung original software)
is there any other way to unlock this feature .....?

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