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Can't activate wifi calling on rooted phone?

I have a google Pixel on Android 7.1.2 on Verizon. I've had wifi calling activated the whole time that I've had the Pixel, on various cell providers, until yesterday. Decided to root my phone to be able to use "Radio Control", an app that will put the phone into Airplane mode when connected to wifi. Did that yesterday, and since then I've not been able to activate wifi calling. My phone is stock other than being rooted...I tried the Radio Control app, and it worked as it should. I've just removed it again, until I can get wifi calling activated. Oh, by the way, rooted by unlocking the bootloader, putting TWRP recovery on the phone, and then installing SuperSu via TWRP.
I've tried:
-Flushing app caches in "Storage", and flushing the phone app cache.
-Having "My Verizon" app on the phone.
-Resetting network settings.
-Activating with and without being in Airplane mode, always with wifi connected, though.
-Removing and restoring "Advanced Calling" setting.
The only thing I haven't tried is that one with the live chicken, a pentagram, and incense. That's my next thing to try.
Any suggestions? I'm really amazed that I can't activate wifi, since Verizon suggests this to stabilize wifi calling for their customers. I guess that they've never actually tried it themselves. Does anyone have wifi calling activated on a rooted Pixel? Do you remember doing anything in particular to get wifi activated, other than trying repeatedly to turn it on in the phone's settings?
By the way, the reason that wifi calling doesn't seem to work well on Verizon isn't wifi calling functionality, wifi calling itself works fine. It's because Verizon only allows the setting "Cellular preferred" for wifi calling. You cannot set "Wifi preferred" for wifi calling. This means that the cell radio is busy nearly all the time in a low cell signal area (like my house), working to make the cell signal usable. I noticed that there was much less battery drain while I was testing "Radio Control" since the phone was in Airplane mode, but I didn't have wifi calling activated at that point. Wifi was connected (of course), but wifi calling was not activated.
I hope that this is all clear, and that someone out there might remember something helpful for me. Or at least be able to tell me that wifi calling can or can't be activated on a rooted phone. If I can't root and get wifi calling activated, I'm going to sell the Pixel, as it doesn't meet my needs. I also have an iPhone that works perfectly with wifi calling on Verizon, but I'd much rather be using the Pixel.
Thanks!

I'm on Verizon and had that happen and found it was because of the theme i was using. Just had to reapply the theme to settings and all fixed. Also, I just checked the settings and you can set it to WiFi preferred.

Droid1019 said:
I'm on Verizon and had that happen and found it was because of the theme i was using. Just had to reapply the theme to settings and all fixed. Also, I just checked the settings and you can set it to WiFi preferred.
Click to expand...
Click to collapse
Sounds good, just a couple of questions. First, which theme? Where do you access the particular theme in settings that you're referring to? The only theme that I've changed from default is the keyboard theme.
The other question is how can you change the wifi calling setting to WiFi preferred? Do you click on the wifi calling setting that has "Cellular preferred", and a menu comes up that includes "WiFi preferred"? I don't get that menu when I click on that setting, all I get is a setting for "roaming", and for 911 address, nothing else.
Also, which Android build are you on? I'm on Android 7.1.2, build NHG47K. Are you on that build? Or maybe N2G47E? I was wondering about that.

I'm on the 7.1.2 K build with a downloaded theme-not in settings. I think you have to set up the emergency address for wifi calling to work. And yes it's roaming preferences where you can change to WiFi preferred.

Just did a factory reset to try removing root and then activating wifi calling unrooted. Then add root again and see if wifi calling sticks or goes away....
So I'm currently unrooted and am not able to activate wifi calling. Sounds like time for a call to Verizon...Should be able to activate wifi calling with stock ROM. Have done this one before *smile*.
Things are not going well...looks like the Pixel may be heading out the door, too much time spent for no results.

RogerSC said:
Just did a factory reset to try removing root and then activating wifi calling unrooted. Then add root again and see if wifi calling sticks or goes away....
So I'm currently unrooted and am not able to activate wifi calling. Sounds like time for a call to Verizon...Should be able to activate wifi calling with stock ROM. Have done this one before *smile*.
Things are not going well...looks like the Pixel may be heading out the door, too much time spent for no results.
Click to expand...
Click to collapse
Did you update emergency address? That's has to be set up for wifi calling to work. https://www.verizonwireless.com/support/knowledge-base-208085/

Any other tips to get wifi calling enable? Whenever I click enable, it just goes to a generic error message and then nothing. So I can't even get to the screen to enter an emergency address. I have a ticket open with Verizon, but since I have an unlocked bootloader, I don't want to do a warranty exchange.

The rest of the story, used iPhone 6S Plus for a couple of months so that I could use wifi calling at home, and sold the Pixel. I did get very tired of the iPhone, even though wifi calling works perfectly on the iPhone on Verizon. So I got the new Verizon 4G/LTE Network Extender so I wouldn't need wifi calling here at home. That's allowed me to get another Pixel phone and use it at home without relying on wifi calling, now have 4/5 bars of cellular signal strength throughout my house. The Network Extender is a really nice piece of hardware, a great upgrade for the old 3G model that had no way to tell what was going on. The new 4G/LTE model has a web admin GUI page that has all kinds of useful status information on it. As well as a one-line display that shows each step in the startup sequence as it comes up.
The new Pixel works just as the old one with wifi calling on Verizon. "Cellular preferred" is the only setting available for wifi calling. Which means that if there's a low cell signal it will generally be used in preference to a strong wifi signal. Don't know why Verizon insists on this setting, I guess that they really don't want to support reliable wifi calling on the Pixel. I've thought about rooting my phone again to see if can get wifi calling working reliably, but now that the Pixel is able to use wifi calling and I don't need wifi calling at home, I'm inclined to leave it alone. In other words, getting wifi calling working perfectly isn't a good enough reason for me to root my phone *smile*. I can root it in the future if I have a good enough reason.
So the bottom line is that I'm pretty happy with the Pixel now, works as I need it to...just tried the Android O Beta, and liked what I saw there. Really glad that I'm back on Android.
Update: found an article here about how to change calling setting to "Wi-Fi preferred" for Pixel on Verizon...tried it and worked for me:
https://forum.xda-developers.com/pixel-xl/how-to/verizon-want-wifi-preferred-wifi-calling-t3622700

[Q] Google Fi - WiFi Calling

Long shot, but maybe someone else will have an idea. I know Fi uses T-Mobile for "compatible" phones, but for some reason, I can't get WiFi Calling to work properly. I have used T-Mobile MVNOs before with WiFi Calling working, but on stock it doesn't even give me the option, and custom ROMs enable but don't dial on WiFi. I tried using the OP dialer menu to force it to enable in OOS, but it is still not working. Anyone have experience with Fi on the OP6? Does WiFi Calling work for you? VoLTE works perfectly fine, but I really was hoping for WiFi Calling. Where I live, ten minutes in any direction is really rural, and LTE signal is nearly impossible to get.

I have Google FI, and a Oneplus 6, stock 9.0.6, rooted, and my WIFI calling works fine

I am rooted as well, running stock on OnePlus 6, and have had no issues either.

Does WiFi calling actually show up in the SIM card settings, and does it indicate during a call with the WiFi logo? Also, are you both using OP dialer or Google Dialer?
EDIT: I went back to completely stock, non-root to do more testing. Initially, the option for WiFi Calling showed up in the SIM settings, but the taskbar never indicated it was running WiFi Calling, and there was no WiFi symbol when calling. After activating through Google Fi app, WiFi Calling option in SIM settings disappeared, and had to use the hidden menu to bring it back. No change in functionality. Still not working. Unsure how it isn't working.

stompysan said:
Does WiFi calling actually show up in the SIM card settings, and does it indicate during a call with the WiFi logo? Also, are you both using OP dialer or Google Dialer?
EDIT: I went back to completely stock, non-root to do more testing. Initially, the option for WiFi Calling showed up in the SIM settings, but the taskbar never indicated it was running WiFi Calling, and there was no WiFi symbol when calling. After activating through Google Fi app, WiFi Calling option in SIM settings disappeared, and had to use the hidden menu to bring it back. No change in functionality. Still not working. Unsure how it isn't working.
Click to expand...
Click to collapse
According to this: https://support.google.com/fi/answer/6224695
The WiFi calling now is supported in none Fi designed phones too, i enabled it but there is no option in phone settings, Fi support is not a help either, I don't know using the hidden menu actually brings it up and working or not

i have Google Fi and i have enabled the VoWifi through OneplusLogkit ( although *#800# brings factory mode / engineer mode option but both VoWifi is enabled) in Google Fi also wifi calling is enabled and in simcard settings it's enabled but still i can make wifi calls. any ideas?
not rooted android 10

VZW WIFI Calling on unlocked Note 20 ultra 5G

Found out the guy lied. So the US unlocked N20U does work with VZW wifi calling.

It definitely does work with my N20U on Verizon.

The only differences between the Unlocked and VZW version are:
1. Native Verizon video calling doesn't work on unlocked, but the integrated Duo video calling is better anyways.
2. Verizon's model doesn't have the Samsung "Smart Call" feature for Caller ID. Instead, it uses Verizon's app.
3. Verizon's version has the Verizon bootscreen and a ton of bloatware, especially games, news apps, and what not. Fortunately, most can be uninstalled, and the rest can be disabled using ADB.

Guyinlaca said:
The only differences between the Unlocked and VZW version are:
1. Native Verizon video calling doesn't work on unlocked, but the integrated Duo video calling is better anyways.
2. Verizon's model doesn't have the Samsung "Smart Call" feature for Caller ID. Instead, it uses Verizon's app.
3. Verizon's version has the Verizon bootscreen and a ton of bloatware, especially games, news apps, and what not. Fortunately, most can be uninstalled, and the rest can be disabled using ADB.
Click to expand...
Click to collapse
I can confirm all of the above. I have an unlocked phone, on U1 firmware, with a Verizon SIM. Wifi calling works. There is no "Advanced Calling" menu in Connection Settings, but there's a toggle for VoLTE and it was switched on by default. No 4G icon, but rather a LTE+ icon is shown in status bar. The only thing I haven't found a workaround for is the native video calling. I cannot initiate it (phone app does not show the option when I'm on a call with another Verizon phone) and if another Verizon phone attempts to initiate a native video call, it tells them that I cannot accept video calls. I checked my VZW account settings on a PC, and despite the video call option being on and not blocked, native calling doesn't work, as described above. Duo works fine for video. I was able to get Visual Voicemail by installing the app that I go from another thread. I installed it before checking to see if the U1 firmware added it by default, so I can't say for sure that it wasn't there already.
Sent from my SM-N986U using Tapatalk

So I had an interesting observation. I flashed my Verizon Note 10+ to U1 firmware and noticed a drastic reduction in data speeds. After getting the Note 20 Ultra, I noticed the data speeds were nearly doubled. I then disabled a ton of Verizon and Samsung apps, and my data speeds dropped drastically as well. Through the process of elimination, I found that the "My Verizon Services" app seems to have a major impact on data speeds. As long as I keep that enabled on the Verizon firmware, data speeds are blazing fast.
Is it possible that Verizon uses apps to prioritize or de-prioritize data speeds? I'd be curious if one could do a side by side of the Unlocked vs Verizon firmware.

ferzmedina said:
I can confirm all of the above. I have an unlocked phone, on U1 firmware, with a Verizon SIM. Wifi calling works. There is no "Advanced Calling" menu in Connection Settings, but there's a toggle for VoLTE and it was switched on by default. No 4G icon, but rather a LTE+ icon is shown in status bar. The only thing I haven't found a workaround for is the native video calling. I cannot initiate it (phone app does not show the option when I'm on a call with another Verizon phone) and if another Verizon phone attempts to initiate a native video call, it tells them that I cannot accept video calls. I checked my VZW account settings on a PC, and despite the video call option being on and not blocked, native calling doesn't work, as described above. Duo works fine for video. I was able to get Visual Voicemail by installing the app that I go from another thread. I installed it before checking to see if the U1 firmware added it by default, so I can't say for sure that it wasn't there already.
Sent from my SM-N986U using Tapatalk
Click to expand...
Click to collapse
Thanks for sharing your observations regarding wifi calling. How can one tell it is working? I am used to older phones advising that wifi calling was in use via text in the phone app. I'm not seeing this notification on my new unlocked T-Mobile-branded N20U with Verizon SIM.
I also noticed the VoLTE toggle in the phone app, switched on and greyed-out, can't be deselected. Of course they don't want to support anything but VoIP anymore. What is the behavior, if the cell signal is decent it won't use wifi? It can't be forced to prefer wifi, can it? I used the trick of putting it in airplane mode, then turn on wifi to try and force it to wifi call. It said it couldn't make the call in airplane mode, which is not encouraging regarding wifi calling being functional on this phone/provider combo.

[email protected] said:
Thanks for sharing your observations regarding wifi calling. How can one tell it is working? I am used to older phones advising that wifi calling was in use via text in the phone app. I'm not seeing this notification on my new unlocked T-Mobile-branded N20U with Verizon SIM.
I also noticed the VoLTE toggle in the phone app, switched on and greyed-out, can't be deselected. Of course they don't want to support anything but VoIP anymore. What is the behavior, if the cell signal is decent it won't use wifi? It can't be forced to prefer wifi, can it? I used the trick of putting it in airplane mode, then turn on wifi to try and force it to wifi call. It said it couldn't make the call in airplane mode, which is not encouraging regarding wifi calling being functional on this phone/provider combo.
Click to expand...
Click to collapse
From what I've found, if you put another carrier's SIM in a truly unlocked carrier branded phone, it should prompt you to apply your carrier settings upon boot. For example when I put a Spectrum SIM in a Verizon phone, it "converted" the CSC (Carrier settings and boot logo) to Spectrum.
My recommendation is to attempt to get the SIM to switch the CSC automatically. If not, use the patched ODIN to flash the Unlocked U1 firmware, and optionally you can flash Verizon from there if Verizon's Video Calling is a must.

Guyinlaca said:
From what I've found, if you put another carrier's SIM in a truly unlocked carrier branded phone, it should prompt you to apply your carrier settings upon boot. For example when I put a Spectrum SIM in a Verizon phone, it "converted" the CSC (Carrier settings and boot logo) to Spectrum.
My recommendation is to attempt to get the SIM to switch the CSC automatically. If not, use the patched ODIN to flash the Unlocked U1 firmware, and optionally you can flash Verizon from there if Verizon's Video Calling is a must.
Click to expand...
Click to collapse
Thanks for the detailed response. I was a little concerned about the T-Mobile branding, and what that truly meant at the software level. I installed the Verizon SIM to this factory-reset phone. If it was going to switch CSC I think it would have happened then. It went through the usual setup steps, but still displays T-Mobile screen at boot. I'm not sure what else I would do to "get the SIM to switch the CSC automatically".
Would you agree with my conclusion that wifi calling isn't working based on the outgoing call failure when in airplane mode with wifi on?
If there is better, more-unlocked firmware I'm not opposed to flashing it. It's been a while since I've played with rooting and custom ROMS, but I'm guessing stock firmware is a lower-risk activity on an expensive phone.
I'll refer to this link to try and flash to unlocked U1 firmware, hopefully that will allow wifi calling compatibility:
OTA and Non-OTA Firmware for N986U and N986U1

How to enable VoLTE or how to tell if it is using VoLTE?

I just got the Pixel 4a and I'm trying to figure out if it is using VoLTE for calls. I am still on android 10 and my carrier is Red Pocket over the verizon network. I chatted with Red Pocket customer service and they said that they enabled VoLTE on my line.

johninor said:
I just got the Pixel 4a and I'm trying to figure out if it is using VoLTE for calls. I am still on android 10 and my carrier is Red Pocket over the verizon network. I chatted with Red Pocket customer service and they said that they enabled VoLTE on my line.
Click to expand...
Click to collapse
I think a good indicator of you using VoLTE would be an "HD" tag sitting next to your call time counter (see attached). The only problem to have HD voice enabled for the given call, is that both you and your calling party have to have VoLTE on.

While on a phone call, try to do something like go to your phone internet browser and go to a website. If the 4g signal icon goes away and you have no data on the browser it is a probable you dont have volte. Make sure your wifi is off while doing this.

Archangel said:
While on a phone call, try to do something like go to your phone internet browser and go to a website. If the 4g signal icon goes away and you have no data on the browser it is a probable you dont have volte. Make sure your wifi is off while doing this.
Click to expand...
Click to collapse
I tried this and when calling, the LTE status icon disappears and I can't access the internet.
Is there something on the phone I need to enable for VoLTE? I've poked around in settings and I can't find anything.

OP here. Thanks all. I contacted Red Pocket and found out that VoLTE was not enabled on my line, despite saying it was enabled in an earlier call. As soon as they enabled it, I rebooted the phone. Now the calls connect and the LTE status indicator stays on while a call is connected. I din'd have to do anything on the Pixel

Question Wifi-Calling?

Greetings everyone!
Just got my Pixel 6a, love it so far, but i have one problem: Wifi Call doesnt work.
Whenever i try do a wifi call, i just get the message "out of network call"
Im using a german sim card from o2 (telefonica) and the thing is: my prior phone
was a redmi note 10 5g and with this phone (same sim card) wifi calling just worked like a charm.
so my question is: is there any trick to make it work? any explanation why it doesnt work with the 6a?
its a real bummer to go from a cheap a... redmi where this function just works fine to a nice and not so cheap pixel
(love google phones by the way, its my 3rd one), just to realize that something doesnt work as excpected.
i also tried a different os (calyx os), still no wifi-call.
help?

realCyphox said:
Greetings everyone!
Just got my Pixel 6a, love it so far, but i have one problem: Wifi Call doesnt work.
Whenever i try do a wifi call, i just get the message "out of network call"
Im using a german sim card from o2 (telefonica) and the thing is: my prior phone
was a redmi note 10 5g and with this phone (same sim card) wifi calling just worked like a charm.
so my question is: is there any trick to make it work? any explanation why it doesnt work with the 6a?
its a real bummer to go from a cheap a... redmi where this function just works fine to a nice and not so cheap pixel
(love google phones by the way, its my 3rd one), just to realize that something doesnt work as excpected.
i also tried a different os (calyx os), still no wifi-call.
help?
Click to expand...
Click to collapse
I'm using the Pixel 6a in Germany with o2 too - I've no issues with VoWifi and VoLTE. Are you shure you've enabled WLAN call in the accordant settings?

I use Google Voice...there an easier way w/o picking up an additional phone #?
On AT&T in the US...which is prolly why...lol

accuphase said:
I'm using the Pixel 6a in Germany with o2 too - I've no issues with VoWifi and VoLTE. Are you shure you've enabled WLAN call in the accordant settings?
Click to expand...
Click to collapse
i wrote that i used wifi calling with the redmi just fine, so i guess i know how to set it up, yes. so far i tried two o2 cards, no luck. question is, can you (you) really do phone calls by wifi or are you just using cellular without actually knowing. can you still do phone calls when airplane mode is on but wifi is enabled? do you see the wifi-icon onscreen (below number/name you're calling) when making a call?

realCyphox said:
i wrote that i used wifi calling with the redmi just fine, so i guess i know how to set it up, yes. so far i tried two o2 cards, no luck. question is, can you (you) really do phone calls by wifi or are you just using cellular without actually knowing. can you still do phone calls when airplane mode is on but wifi is enabled? do you see the wifi-icon onscreen (below number/name you're calling) when making a call?
Click to expand...
Click to collapse
can you really do phone calls by wifi ? Yes
can you still do phone calls when airplane mode is on but wifi is enabled? Yes
do you see the wifi-icon onscreen (below number/name you're calling) when making a call? Yes

realCyphox said:
i wrote that i used wifi calling with the redmi just fine, so i guess i know how to set it up, yes. so far i tried two o2 cards, no luck. question is, can you (you) really do phone calls by wifi or are you just using cellular without actually knowing. can you still do phone calls when airplane mode is on but wifi is enabled? do you see the wifi-icon onscreen (below number/name you're calling) when making a call?
Click to expand...
Click to collapse
Hi,
I'm having similar issues with my Pixel 6a, also in Germany. I use it with two SIM cards (o2/Telefonica physical SIM card and Vodafone eSIM). I have enabled Wifi Calling in the SIM card settings for both SIM Cards, but _most_ of the time, it doesn't work. The phone tries to use placing calls over cellular (my home office is in my basement, so cellular reception is pretty bad to non-existent, especially with Vodafone)
Most of the times, because sometimes it does work, then it shows up in the status bar and the wifi symbol is shown when placing a call. I couldn't yet figure out any correlation to when or why it works or doesn't, I have tried restarting the phone, putting it to airplane mode, deactivating and re-activating Wifi-calling - or just using one SIM card.
I'd say ~90% of the time it doesn't work.
btw I have used a Pixel 4a with the exact same setup / SIM cards before and didn't experience any issue whatsoever.
Do you have any workaround in the meantime?

Not sure if this helps any, but when entering *#*#4636#*#* on dialpad, going into 'Phone Information'
Is WIFI Calling Provisioned enabled like in my attachment?
Worth looking into:
How to Enable the Preferred WiFi Calling Option on the Verizon Pixel & Pixel XL
A tutorial on how to enable the Wifi Preferred mode in the WiFi Calling settings on the Verizon Google Pixel and Google Pixel XL.
www.xda-developers.com

andybones said:
Not sure if this helps any, but when entering *#*#4636#*#* on dialpad, going into 'Phone Information'
Is WIFI Calling Provisioned enabled like in my attachment?
Worth looking into:
How to Enable the Preferred WiFi Calling Option on the Verizon Pixel & Pixel XL
A tutorial on how to enable the Wifi Preferred mode in the WiFi Calling settings on the Verizon Google Pixel and Google Pixel XL.
www.xda-developers.com
Click to expand...
Click to collapse
Thanks for your answer. It is enabled for both sim cards indeed, though (WLAN-Anrufe eingerichtet is the option in German).

koenichlich said:
Thanks for your answer. It is enabled for both sim cards indeed, though (WLAN-Anrufe eingerichtet is the option in German).
Click to expand...
Click to collapse
Very welcome.
I'm sorry, I wish I was able to help with this!

I have found the error - it's actually caused by Blokada. I'm not sure whether it's just after some update of Blokada (I have used Blokada v5 for quite some time and regularly update) or the combination of Pixel 6a with Blokada, though. But Wifi calling always does work, when I disable Blokada.
Than I found this thread and have subsequently added com.android.phone and com.android.providers.telephony as bypass nad it does seem to work until now. Somebody else suggested bypass of Carrier provisioning service, I haven't tested yet, since as said it does seem to work now.
Just wanted to share my findings, if somebody else stumbles upon this thread.