Develop Bugs

tmobile g4 no volte?

i have setting turn on but still goes to hspa,anybody volte working?

littlegreenalien said:
i have setting turn on but still goes to hspa,anybody volte working?
Click to expand...
Click to collapse
Have to live in a Volte market.

Swizzle82 said:
Have to live in a Volte market.
Click to expand...
Click to collapse
i had a nexus 6 and was getting voLte

littlegreenalien said:
i had a nexus 6 and was getting voLte
Click to expand...
Click to collapse
Hmm dont know then. Try disabling it and enabling it in settings

Works fine on mine, just tested it out.

Swizzle82 said:
Have to live in a Volte market.
Click to expand...
Click to collapse
Mine isn't working either and I'm in a live VOLTE market and it's worked on other devices.

Mine works fine

Mine works some days and doesn't work some days. It's annoying.

Is it possible the other person does not have volte? I remember only able to use that when i was calling other T-Mobile users.

chris0160 said:
Is it possible the other person does not have volte? I remember only able to use that when i was calling other T-Mobile users.
Click to expand...
Click to collapse
Correct! In order for volte to work BOTH phones must be enabled, and in a volte market.

Ditto. Read some papers on how VoLTE works and called up T-Mo to confirm, they said because of how the connections between the phones are established, both phones must have LTE and live in a VoLTE market. VoLTE actually uses a higher quality coded than HSPA+ if I recall so the other person has to have the ability to receive and decode properly.

Before i did factory reset,i could not get volte, but now i have volte( they show hd in contacts) after factory resetting the phone. Two things i hate about this phone are battery life and chrome browser lagging. And now i just found out a new issue is touch screen sensitivity. It is less responsive than my old galaxy s4.

Has this been recently changed? I had an Xperia z3 and any time i was on lte, my calls were routed volte. I'm 100% positive this is the case, my mother has an M8 without volte, my Xperia still used volte when calling her.

mscricco said:
Has this been recently changed? I had an Xperia z3 and any time i was on lte, my calls were routed volte. I'm 100% positive this is the case, my mother has an M8 without volte, my Xperia still used volte when calling her.
Click to expand...
Click to collapse
It's not new. Are you sure you had VoLTE? The basic requirement of VoLTE requires both users to have support of this.

Sfkn2 said:
It's not new. Are you sure you had VoLTE? The basic requirement of VoLTE requires both users to have support of this.
Click to expand...
Click to collapse
Positive, it was only "HD" if i called another volte device, but it was always used on my end. Dead give away was that m phone stayed connected to lte while in a call, if i turned off volte in settings it would drop down to hspa while in call. Also, there are areas around me that seem to only have edge and lte, no hspa. In these areas it would drop to edge when making a call with volte disabled, with volte enabled it stayed on lte.

mscricco said:
Positive, it was only "HD" if i called another volte device, but it was always used on my end. Dead give away was that m phone stayed connected to lte while in a call, if i turned off volte in settings it would drop down to hspa while in call. Also, there are areas around me that seem to only have edge and lte, no hspa. In these areas it would drop to edge when making a call with volte disabled, with volte enabled it stayed on lte.
Click to expand...
Click to collapse
HD voice is when both devices are connected to at least HSPA when you are connected to TMO's network as far as I'm aware. There are some old articles that you may find if you do a google search, since HD voice is still a rather new concept to TMO.

Sfkn2 said:
HD voice is when both devices are connected to at least HSPA when you are connected to TMO's network as far as I'm aware. There are some old articles that you may find if you do a google search, since HD voice is still a rather new concept to TMO.
Click to expand...
Click to collapse
I know, its a little odd, when volte was not enabled it would display the hd icon whenever i called another hd voice enabled phone. However, when i had volte on, it would only display it when calling another volte device. I know my phone was always using volte though because it would stay connected to lte while in a call with it enabled.

So if you're in a Band 12-only area, and VoLTE is literally the only way for you to make a voice call, you can only call other VoLTE-enabled devices? I find that a bit hard to believe.

[VOLTE] Volte not working in Nextbit Robin [7.0]

I'm on Android 7.0 official, no root, no bootloader unlocked. I've Reliance Jio (which btw is LTE only) network. I can use internet fine on LTE but, calls doesn't work. I've enabled LTE enhanced mode. I also checked the apns. To place calls I've to use their 3rd party app which is pretty annoying. Any help?

0xelectron said:
I'm on Android 7.0 official, no root, no bootloader unlocked. I've Reliance Jio (which btw is LTE only) network. I can use internet fine on LTE but, calls doesn't work. I've enabled LTE enhanced mode. I also checked the apns. To place calls I've to use their 3rd party app which is pretty annoying. Any help?
Click to expand...
Click to collapse
Your carrier must not've cleared VOLTE for the Robin.

xBane_ said:
Your carrier must not've cleared VOLTE for the Robin.
Click to expand...
Click to collapse
Hmm. Never heard of that. Will have check on this. Thanks!

0xelectron said:
Hmm. Never heard of that. Will have check on this. Thanks!
Click to expand...
Click to collapse
Just for a little bit of help, see if on your carriers website if they have a list of VOLTE compatable devices for their Network.

xBane_ said:
Just for a little bit of help, see if on your carriers website if they have a list of VOLTE compatable devices for their Network.
Click to expand...
Click to collapse
Ok. So, they do they have the phone listed.

Want to use my Nextbit in India and US
0xelectron said:
Ok. So, they do they have the phone listed.
Click to expand...
Click to collapse
I go back and forth from India and US so I really need this to work with Jio LTE and VOLTE in India. Its listed on various sites as being compatible. Did you ever figure out why your phone wasn't getting VOLTE?

Not sure why it isn't working for you. When Jio was launched late last year, I use it for a month Nov-dec 2016 and it worked fine. Tried it again in Feb 2017 for a week and it was fine.
Are you using the stock launcher and dialer? The dialer had worked for me without any issue without installing any 3rd party dialer.

jio is woeking fine in robin i have tested it in delhi, nainital etc..
Jio is working on most of the custom roms and flawless on stock rom..

Verizon Advanced/HD Calling on Unlocked S9+

I currently have an Unlocked Galaxy S9+ directly from Samsung running on Verizon's network.
I can't seem to find a way to enable the HD Calling/Video Calling/Advanced Calling features.
Some rumors suspected if you installed the MyVerizon app it would enable the advanced calling menu, but that didn't work.
Is there any way to enable these features?
Is there a command through ADB to enable this?
Would I need root access?
EDIT: Model Number: SM-G965U1 - Snapdragon

No way to get Video and WiFi calling to work (yet), but go to Connections, then Mobile Networks and you can turn VoLTE Calls on or off, which is HD voice. It was there by default on my unlocked S9+ on Verizon. If you don't see it, you may need to add HD calling to your Verizon plan (it's free, but you have to login to the website and add it as a feature).

iamrobk said:
No way to get Video and WiFi calling to work (yet), but go to Connections, then Mobile Networks and you can turn VoLTE Calls on or off, which is HD voice. It was there by default on my unlocked S9+ on Verizon. If you don't see it, you may need to add HD calling to your Verizon plan (it's free, but you have to login to the website and add it as a feature).
Click to expand...
Click to collapse
Ahh, I already have VoLTE enabled. Guess I will have to wait until someone finds a way to enable those other features.
Thanks for the info!

Whatsapp and Duo appear to support video calling over WiFi

Airstream25 said:
Whatsapp and Duo appear to support video calling over WiFi
Click to expand...
Click to collapse
Yeah, I know that they support video calling, along with a ton of other apps, but there is a native video calling option.

They got it working on unlocked S8, using some of the APKs and CSC from the Verizon phone. See below:
https://forum.xda-developers.com/ve...to/how-to-video-wificalling-unlocked-t3615027
Or just by flashing the whole Verizon firmware on the unlocked phone (kinda defeats the purpose of getting the unlocked phone):
https://forum.xda-developers.com/ve...axy-s8-unlocked-version-wifi-calling-t3699806
So I'm hoping it's just a matter of time, as I also need the WIFI calling to work on my unlocked phone. I think that's what is needed in order to send texts over WIFI via the Verizon Message+ app, which is what I ultimately need when in poor signal areas (sending texts over WIFI, without getting a second number with Google Voice or asking people to install secondary apps like Allo/Duo). Or I could just switch to T-mobile I guess, where all these things work with the unlocked phone without the additional hassle.

Here is to hoping we can get wifi calling and native video calling working on the unlocked s9/s9+ phones for those of us on verizon.

I have the S9+ (G965U1), and I have used the included Wi-Fi Calling app.
Look for Wi-Fi Calling.

Dudeman456 said:
I have the S9+ (G965U1), and I have used the included Wi-Fi Calling app.
Look for Wi-Fi Calling.
Click to expand...
Click to collapse
I just got my unlocked S9 what do I need to do to get everything working on VZW I mean HD Calling, and video calling etc.? I've never owned Samsung Phones, I've always had unlocked bootloader HTC phones that I could do anything I wanted with. I don't know anything about Samsung accept "Odin". I still havn't put the sim card in cause I was thinking of returning the phone.

Thanks for the hint Dudeman456! I found WiFi Calling under system apps and went to its settings and activated its permissions. Now I can send text messages over WiFi using Verizon Message+ app (and not the included Messages app or Android Messages). I still don't have WiFi calling through the default phone app on S9. I wonder if there is a different phone app that I need for that purpose (Verizon Phone app?).

Same issue as my unlocked Note 8 I got from Sammy. You can enable video calling in the *#*#4636*#*# menu. You will not be able to activate WiFi calling though unless you flash the Verizon firmware. You also will not be able to use any Verizon features such as watching NFL games (but I think that is changing and won't be a Verizon exclusive) and premium visual voicemail. Really is a deal breaker for me.
Sent from my SM-G965U1 using Tapatalk

skinnytoo2 said:
Same issue as my unlocked Note 8 I got from Sammy. You can enable video calling in the *#*#4636*#*# menu. You will not be able to activate WiFi calling though unless you flash the Verizon firmware. You also will not be able to use any Verizon features such as watching NFL games (but I think that is changing and won't be a Verizon exclusive) and premium visual voicemail. Really is a deal breaker for me.
Sent from my SM-G965U1 using Tapatalk
Click to expand...
Click to collapse
What in the world does this mean "*#*#4636*#*# menu"????

All,
This is a KNOWN issue with Verizon.
I got my S9+ on Wed 3/14 from pre-order and could not get video calling to work. Went to Verizon store on Sat 3/17 preparing to wage war with them. The Verizon tech stopped me in my tracks and said it's already known. An email sent from corporate to all verizon stores indicating the problem with video calling. It is an issue with Samsung software which they are "diligently" working to correct and will push an update soon.
Notice this.. go to either MyVerizon app or the website and login. then go to devices/manage devices...then go controls then to adjust service blocks and you will see the video calling is blocked and cannot be unblocked. Apparently this is done for "our own good" until Samsung fixes the issue.
No date from the tech on when a fix will be issued.
DONT try anything crazy to enable video calling..just be patient and wait for the fix. My S9+ is unlocked too and i was assured that video calling will be enabled once a fix is issued.

ajal said:
Thanks for the hint Dudeman456! I found WiFi Calling under system apps and went to its settings and activated its permissions. Now I can send text messages over WiFi using Verizon Message+ app (and not the included Messages app or Android Messages). I still don't have WiFi calling through the default phone app on S9. I wonder if there is a different phone app that I need for that purpose (Verizon Phone app?).
Click to expand...
Click to collapse
That is odd. I am using my G965U1 on Sprint and my Wi-Fi Calling app is in the regular app drawer with everything else. I did not expect it to work, since it is Sprint, but it did. The Wi-Fi Calling app was available before placing a sim card inside.

Gnex81 said:
All,
This is a KNOWN issue with Verizon.
I got my S9+ on Wed 3/14 from pre-order and could not get video calling to work. Went to Verizon store on Sat 3/17 preparing to wage war with them. The Verizon tech stopped me in my tracks and said it's already known. An email sent from corporate to all verizon stores indicating the problem with video calling. It is an issue with Samsung software which they are "diligently" working to correct and will push an update soon.
Notice this.. go to either MyVerizon app or the website and login. then go to devices/manage devices...then go controls then to adjust service blocks and you will see the video calling is blocked and cannot be unblocked. Apparently this is done for "our own good" until Samsung fixes the issue.
No date from the tech on when a fix will be issued.
DONT try anything crazy to enable video calling..just be patient and wait for the fix. My S9+ is unlocked too and i was assured that video calling will be enabled once a fix is issued.
Click to expand...
Click to collapse
I don't think it will unblock. If you didn't buy the VZW branded phone you most likely won't get video calling. I assumed this from the start. I spent a good portion of the day speaking with a VZW 2nd level support engineer supervisor with 20 years experience. He asked is there anything else that could be done besides unblocking video calls to make me happy, because that at this time it is impossible as the phone is not a VZW phone. Look in you phone profile on their website, does a picture of your phone show up? My profile is blank, that means the phone is not in their system of phones, even though I flashed the full VZW package with bloatware and all after first a full reset. My Phone has VZW splash screen and all the advanced calling menus, in about phone it says SM-G960U, but that block cant be removed. Maybe I screwed up somewhere and alerted them by booting with a sim card in? Maybe they flagged my IMEI? I don't know but the rep said point blank they can't unblock video calling on that line, and unlocked phones are not supported.

Are you all seeing LTE+ (carrier aggregation) on your Verizon S9 devices? I'm in Vegas and my device appears to sit on B13 (700mhz) and does not hand off anywhere else.

DevalB said:
Are you all seeing LTE+ (carrier aggregation) on your Verizon S9 devices? I'm in Vegas and my device appears to sit on B13 (700mhz) and does not hand off anywhere else.
Click to expand...
Click to collapse
My S9 does not show LTE or 4G. I think there are a lot of bugs still.

skopper said:
My S9 does not show LTE or 4G. I think there are a lot of bugs still.
Click to expand...
Click to collapse
That's a whole other issue then. Is your device an unlocked device?

DevalB said:
That's a whole other issue then. Is your device an unlocked device?
Click to expand...
Click to collapse
Yes - unlocked on Verizon.

You need the right apps for Wi-Fi calling and some in framework. I don't own a s9 but that's what you need to do to get it to work. Along with some csc edits

Three Super-Voice VOLTE

Hello, does anyone know if Three's super-voice will work on a Pixel 3 XL purchased from Google directly rather than from Three? Three list the Pixel 3 as supported for VOLTE but they only do the 64gb models and currently have no plans to offer the 128gb which is what I need.
I am hoping that it is not the Three ROM which enables this feature. Would someone be able to confirm please?
Thank you

Prototypeuk said:
Hello, does anyone know if Three's super-voice will work on a Pixel 3 XL purchased from Google directly rather than from Three? Three list the Pixel 3 as supported for VOLTE but they only do the 64gb models and currently have no plans to offer the 128gb which is what I need.
I am hoping that it is not the Three ROM which enables this feature. Would someone be able to confirm please?
Thank you
Click to expand...
Click to collapse
These days it's not the ROM on the phone which enables these features it's mainly the network. So if the network allows this feature by putting their sim into the phone will give you the option to select this feature. I'm on EE but got an unlocked version pixel 3 XL as soon as I take the SIM out of the phone the feature disappear from the settings.

Not sure this would help but I got my pixel 3 XL from Vodafone directly and WiFi calling and HD calling is working fine. I don't think any pixel phones have a "branded" firmware so these features are baked in. But either way order it online or over the phone and you can test and if it does not work just return the device back under 14 days rule.

Thank you for the information. I hope it is the same on Three as it is on EE for you. Maybe someone on Three can confirm for me before I commit to my purchase ?

It doesn't work with three uk
I'm having to use their three in touch app on the device. I've got pixel 3 XL 64gb version
Sent from my Huawei P20 Pro (CLT-L29) using Tapatalk

walkerx said:
It doesn't work with three uk
I'm having to use their three in touch app on the device. I've got pixel 3 XL 64gb version
Sent from my Huawei P20 Pro (CLT-L29) using Tapatalk
Click to expand...
Click to collapse
Really, that is so annoying. I was hoping that as the Pixel 3 is on their list of devices which are supposed to work with Super-Voice then it would work like the others mentioned on here without their own Rom. Have you tried contacting them to ask why it isn't working as the device is listed on their website as supported? Have you checked the VOLTE settings or are they missing in the menu?

yeh, you can test any phone to see if wifi calling is available
switch on airplane mode
switch on wifi
if you can still make calls via the dialer then you have wifi calling, if you can't then you don't
if you try this with pixel 3 xl on three it tells you to turn mobile on
Also noticed though when I did make a call at home yesterday while on 4G it showed HD next to the call timer

Prototypeuk said:
Hello, does anyone know if Three's super-voice will work on a Pixel 3 XL purchased from Google directly rather than from Three? Three list the Pixel 3 as supported for VOLTE but they only do the 64gb models and currently have no plans to offer the 128gb which is what I need.
I am hoping that it is not the Three ROM which enables this feature. Would someone be able to confirm please?
Thank you
Click to expand...
Click to collapse
I am on 3 UK, bought my 128gb 2XL unlocked from CPW and it does 4g HD calling no problem. WiFi Calling however requires use of the three app.

walkerx said:
yeh, you can test any phone to see if wifi calling is available
switch on airplane mode
switch on wifi
if you can still make calls via the dialer then you have wifi calling, if you can't then you don't
if you try this with pixel 3 xl on three it tells you to turn mobile on
Also noticed though when I did make a call at home yesterday while on 4G it showed HD next to the call timer
Click to expand...
Click to collapse
No sorry I am not referring to using Wifi calling. I know the Three in Touch App will work, what I am referring to is Three's SuperVoice service which allows your phone to make calls using 4G otherwise known as VOLTE.

Demolition49 said:
I am on 3 UK, bought my 128gb 2XL unlocked from CPW and it does 4g HD calling no problem. WiFi Calling however requires use of the three app.
Click to expand...
Click to collapse
Thank you for this info. I am really confused now as walkerx said he tried it and it didn't work lol. Do you get the settings in the Network menu for VOLTE as seen here? https://www.tech-recipes.com/wp-con...-Internet-Mobile-Network-Advanced-Calling.png

Prototypeuk said:
Thank you for this info. I am really confused now as walkerx said he tried it and it didn't work lol. Do you get the settings in the Network menu for VOLTE as seen here? https://www.tech-recipes.com/wp-con...-Internet-Mobile-Network-Advanced-Calling.png
Click to expand...
Click to collapse
No WiFi calling does not work with three uk, you must use their outdated app that's not been updated for 2 years.
4G supervoice is different and uses the 4G network and you can tell with the HD symbol that appears you are on their 4G sulervoice.
I have asked three about wifi calling and they reckon they are working with Google to get it working. Tbh it is Three that nerd to sort out their end as it is a common format and configuration.
From Three
we know Wi-Fi calling is important, unfortunately the Pixel 3 doesn't support this right now ? we’re working hard with Google to have this sorted asap though so watch this space ? >DD
Click to expand...
Click to collapse
As for the Volte settings you don't get any on three
Sent from my Google Pixel 3 XL using XDA Labs

walkerx said:
No WiFi calling does not work with three uk, you must use their outdated app that's not been updated for 2 years.
4G supervoice is different and uses the 4G network and you can tell with the HD symbol that appears you are on their 4G sulervoice.
I have asked three about wifi calling and they reckon they are working with Google to get it working. Tbh it is Three that nerd to sort out their end as it is a common format and configuration.
From Three
As for the Volte settings you don't get any on three
Sent from my Google Pixel 3 XL using XDA Labs
Click to expand...
Click to collapse
Ok thank you for the info. It is the 4G Supervoice I am keen to have working. I am not worried about Wifi calling or their Three in Touch App.

Attached is the settings you get on Three
If I turn off WiFi and check it says connected to lte but have no option to enable disable tbis
Sent from my Google Pixel 3 XL using XDA Labs

Prototypeuk said:
Ok thank you for the info. It is the 4G Supervoice I am keen to have working. I am not worried about Wifi calling or their Three in Touch App.
Click to expand...
Click to collapse
I can confirm on three UK you 100% get HD calling, but as previously stated you don't get WIFI calling, you need to use the app for that. I can screenshot an HD call icon if you want

Demolition49 said:
I can screenshot an HD call icon if you want
Click to expand...
Click to collapse
Yes please, I would like a screenshot.
I have a Pixel 3 XL and have never seen 4G calling work, I always observe the phone dropping the "4G" and moving to "H / H+" next to the signal strength icon when a call is made.
I do live in a 4G area

BugAlugs100 said:
Yes please, I would like a screenshot.
I have a Pixel 3 XL and have never seen 4G calling work, I always observe the phone dropping the "4G" and moving to "H / H+" next to the signal strength icon when a call is made.
I do live in a 4G area
Click to expand...
Click to collapse
As far as I'm aware 4G calling (or '4G supervoice' as they like to call it) only works on band 20 with Three. If you're in an area where there are bands of 3G signal available, it will use them. If you're somewhere where there is only 4G on band 20, then it'll work. - This signal travels further and penetrates buildings better - so is there when other signals aren't.
All the other operators seem to allow 4G calling on all bands of frequency now. Three only allows it on band 20.
I assume at some point they'll roll it out to all their 4G signal.

Was hoping January update may enable Three wifi calling but it has not.
Can confirm that volte is working on three and pixel 3xl.
I've just made a call and it stayed on 4G. First time I'm actually taking notice so not sure if this has always happened or just after January update.
Now we need wifi calling. Who do we approach about this?

bigup7 said:
Was hoping January update may enable Three wifi calling but it has not.
Can confirm that volte is working on three and pixel 3xl.
I've just made a call and it stayed on 4G. First time I'm actually taking notice so not sure if this has always happened or just after January update.
Now we need wifi calling. Who do we approach about this?
Click to expand...
Click to collapse
VoLTE has been working for a good while now - if not since launch?
I was hoping WiFi calling would appear after the update too. All they've said on that is that they're 'working with Google' to get it out as soon as possible.
I don't see why it's so hard for them, it's on the iPhone, the S8, the S9 and all the other big brand phones they sell.
I want WiFi calling, but I'm not as bothered about it as I was about 4G calling- VoLTE gives me a usable signal at home where there was none before.

I've now seen a couple of calls where "HD" appears in thr phone app next to the call timer.
It appears, to me, to only work on other calls to mobiles in the three network.
So I'm not experiencing a true VoLTE experience as I understood it could be.

It's sad when my wife's phone which is a Huawei P20 pro from the Vodafone network (unlocked) supports WiFi calling on 3 network!
Come on Three/Google.

Question Realme Gt Master Edition VoWifi dont work?

Realme Gt Master Edition VoWifi dont work?

gfpeti2 said:
Realme Gt Master Edition VoWifi dont work? PLease help, Thanks !
Click to expand...
Click to collapse
it depend on your sim card carrier

I have been looking for that information, thinking about getting this phone to use T-Mobile USA GSM voLTE? is this phone compatible?

@ryantek No, it's not. I have been using Gt Master in Mint Mobile (which is T-Mobile MVNO) for 6 month and no VoLTE, no VoWifi. I could use mobile data, but even this was not very good, often gets stuck to 3g network, though GT Master supports most of the LTE bands used by T-Mobile (except for B71 600Mhz).
I had two long chats with Mint Mobile customer service, no resolution.
I believe it's gonna be even harder to activate it after July 1st, when T-Mobile will shutdown it's 3G network. Mint Mobile didn't make me any problems to buy and activate service, but now constantly bugs me to replace phone for compatible with their network.
I've also tried it with US Mobile (T-Mobile network), Boost Mobile (ATT) and couple others. The same effect.
Save yourself some trouble and buy phone that's on compatibility list: Oneplus, iPhone, Samsung or Motorola.
I bought Galaxy S22 and now use it as my main device in Google FI. GT Master still have active Mint Mobile simcard until 3rd of June, but after that it will be over.

Hi,
Thank you for sharing all of this information. It is sad to see the carriers in the USA do not support this phone. Sadly I will stay away until anyone can confirm a phone of this brand that works with VoLTE (Tmobile).
Once again Thank you.

ryantek said:
Hi,
Thank you for sharing all of this information. It is sad to see the carriers in the USA do not support this phone. Sadly I will stay away until anyone can confirm a phone of this brand that works with VoLTE (Tmobile).
Once again Thank you.
Click to expand...
Click to collapse
Set up VoLTE and VoWiFi via QPST and the ( advaced pdc tool PDC ) Root is required. This option works in stock. You need to try several "choose" profiles, one will definitely go
In custom rom, if it doesn't work, just back up the EFS partition (after editing in stock rom) and restore it later in custom rom

I see. Wondering is there is a signed ROM with VolLTE enable out of the box.

Today I tried Google Fi simcard with my Realme GT Master (normal not modified ROM) and it worked!! VoLTE is working and so is VoWiFI (I think). I'm not 100% sure about VoWifi. I have icon of VoWifi during call but I can't make call just on WiFi while on Airplane Mode, I have to turn off Airplane Mode or it doesn't allow me to make a call.
Google Fi was activated with Galaxy S22 few months ago.
I'm not gonna test it for long, because I use Galaxy S22 as my main device now and in few days I'll move to US Mobile/Verizon, but Google Fi is usable. I still can't recommend buying GT Master for US: too much hassle, too many unknowns.

nndn said:
Today I tried Google Fi simcard with my Realme GT Master (normal not modified ROM) and it worked!! VoLTE is working and so is VoWiFI (I think). I'm not 100% sure about VoWifi. I have icon of VoWifi during call but I can't make call just on WiFi while on Airplane Mode, I have to turn off Airplane Mode or it doesn't allow me to make a call.
Click to expand...
Click to collapse
so basically you don't know which network you were on while VoLTE started to work? Google FI uses all three networks and switches them dynamically

As far as I know Google Fi uses two networks: Tmobile and Us Cellular. As I'm in western Massachusetts and US Cellular doesn't have coverage here, I'm pretty sure I got connected to T-Mobile. But I can't confirm it with 100% certainty.