WiFi calling

[BigE]

WiFi calling menu is part of the CSC portion per carrier. If your S9 is 'unlocked' and not carrier purchased, there is a chance the WiFi menu in setting isn't even there..

For Exynos users ( I am on a TMO Snapdragon) , I guess due time there will be a CSC change feature will be available. I used to have an S7 and a talented OP names @Tkkg1994 had a great tool to change CSC and it was the solution in my case, for the TMO USA with an unlocked phone. I don't know if this service is available for S9 yet..

 

[salada2k]

You can change CSC now if you install a custom ROM. Try Soldiers ROM. I did that, changed from OPS to TEL, got VoLTE and WiFi Calling (woohoo!) then relocked bootloader and went back to stock. My CSC is still TEL and although Knox is tripped, I am once again fully stock and SafetyNet passes, so things like Google Pay are working.

Unfortunately, on ARCC firmware, WiFi calling seems to be borked. After a reboot if works for about 5 mins, then switches back to VoLTE. But LTE calls are slightly improved on ARCC. It's a double edged sword. Hurry up Sammy and fix please!!

 

[samoz83]

With the latest May update seems that wifi calling on unlocked XXU phones now works with Three UK. Not sure about volte.

 

[eastsidebiz]

on my verizon S9, wifi calling is under WIFI
on my unlocked US s9, wifi calling is under the PHONE menu (samsung's dialer)
check that

 

[abecool56]

WiFi calling menu is part of the CSC portion per carrier. If your S9 is 'unlocked' and not carrier purchased, there is a chance the WiFi menu in setting isn't even there..

For Exynos users ( I am on a TMO Snapdragon) , I guess due time there will be a CSC change feature will be available. I used to have an S7 and a talented OP names @Tkkg1994 had a great tool to change CSC and it was the solution in my case, for the TMO USA with an unlocked phone. I don't know if this service is available for S9 yet..

I have the unlocked s9 g9600 is there a way to get the csc I need and get wifi calling on T-Mobile

 

[Micky 22]

Does wifi calling work on Vodafone if you don't have the VODA csc? Is it sim/account dependent?

 

[Cloudane]

Hm, I guess this shifts around depending on the carrier firmware. On plain unlocked phones like the Oneplus I was used to it being in the settings menu. On EE it's hidden away in the phone app itself.

You can always ask Bixby - yes I know - but she's actually very good when it comes to phone settings. "Hi Bixby, turn on Wifi Calling" worked for me when I couldn't find it, and it even showed me on the screen where it is.

Reliable here so far. More so than it was on iOS, in an interesting reversal of the usual pattern, as it tended to disappear a lot there.

 

[skerichards]

I'm using an Sammy S9 - SM-G960F with LineageOS 15.1 (Android 8.1.0), and my carrier is technically ProjectFi but on this phone I can't switch off of T-Mobile (yet). When I search for Wi-Fi Calling, the search takes me to Mobile network settings, like normal. But when I click on Advanced... instead of showing options, the entire Advanced menu disappears. :/
Pretty sure that's not supposed to happen.
~steph~

 

[Viduthalai]

Awesome, its worked. Saved my day

I have wifi calling available on my s9 plus which I bought direct from Samsung, go to the dialer, click the 3 dots in the top right corner. Then select settings, scroll to the bottom and you will see the wifi calling option which can be toggled on or off

Thank you. its worked.