[FIX] Volte Not Working in Custom Roms in Roaming - Xiaomi Redmi 4X Guides, News, & Discussion

So, Many users of custom roms users reported to have broken volte or volte not working while on roaming.
There was a workaround to turn off/on radio from engineering mode but it only lasted till a reboot.
After looking into the matter last night i found the feasible permanent solution for it. It'll be little long so bear with me.
After fiddling with every firmware and custom rom i found out the cause of volte breakdown was the IMS status being not registered for some reason. You guys can check in IMS status option in 3 dot menu inside the engineering mode(*#*#4636#*#*). IMS services are responsible for calling and sms services over lte network.
The fix is quite simple and just needs to add two separate access points for jio sim.
Under access points delete all apns present and add these two new apns:
1) Name- ims APN- ims APN type- ims APN protocol- IPv4/v6 APN roaming protocol- IPv4/v6
Save these settings ( this apn wont reflect in the list after saving, so dont worry if it doesnt show up)
2) Name- Jio Internet APN- jionet APN type- default APN protocol- IPv4/v6 APN roaming protocol- IPv4/v6
Do not change other values. Save this profile and select it.
Reboot once. Your volte should work flawlessly.
Hope it helps.

Dude you are life saver for me... ??
Working flawlessly now... But one thing i wanna ask why this problem is specific to some devices what we have done wrong..? Not everyone have to try this method as thier volte is working fine...
And should i need to repeat this process whenever i switch to new custom rom In future..?

vicky083_ said:
Dude you are life saver for me... ??
Working flawlessly now... But one thing i wanna ask why this problem is specific to some devices what we have done wrong..? Not everyone have to try this method as thier volte is working fine...
And should i need to repeat this process whenever i switch to new custom rom In future..?
Click to expand...
Click to collapse
Happy to help. ? Didn't sleep last night for this. ?
I am also wondering to why its happening to specific users. I think its happening to users having jio in roaming only.
If volte doesn't work on switching to new rom then you can repeat this process. I'll say its a one time investment. ?

raza_maestro said:
Happy to help. Didn't sleep last night for this.
I am also wondering to why its happening to specific users. I think its happening to users having jio in roaming only.
If volte doesn't work on switching to new rom then you can repeat this process. I'll say its a one time investment.
Click to expand...
Click to collapse
Hahaha.. Really better than that annoying engineering mode n all... well, really appreciate your hardwork....??

vicky083_ said:
Hahaha.. Really better than that annoying engineering mode n all... well, really appreciate your hardwork....??
Click to expand...
Click to collapse
Thanks dude. Enjoy.

I am a noob here, I tried this on miui 9 repacked but still no volte icon. Jio4gvoice is also not working as it says the phone has volte.

sahir7860 said:
I am a noob here, I tried this on miui 9 repacked but still no volte icon. Jio4gvoice is also not working as it says the phone has volte.
Click to expand...
Click to collapse
First check if enhanced calling or something like this option is enabled in sim settings or not.

raza_maestro said:
First check if enhanced calling or something like this option is enabled in sim settings or not.
Click to expand...
Click to collapse
Yes it is enabled.

sahir7860 said:
Yes it is enabled.
Click to expand...
Click to collapse
Then check the ims status from engineering mode. Dial *#*#4636#*#* and choose phone information and from 3 dot menu select ims status. What does it say?

raza_maestro said:
Then check the ims status from engineering mode. Dial *#*#4636#*#* and choose phone information and from 3 dot menu select ims status. What does it say?
Click to expand...
Click to collapse
No option to check ims status.

sahir7860 said:
No option to check ims status.
Click to expand...
Click to collapse
Then try fiddling with apns to see if thats the issue.

raza_maestro said:
Then check the ims status from engineering mode. Dial *#*#4636#*#* and choose phone information and from 3 dot menu select ims status. What does it say?
Click to expand...
Click to collapse
There was no ims status on mini 9, but in other custom ROM it has
Ims registration: not registered
Voice over LTE: unavailable
What should I do?

sahir7860 said:
There was no ims status on mini 9, but in other custom ROM it has
Ims registration: not registered
Voice over LTE: unavailable
What should I do?
Click to expand...
Click to collapse
Just change the apn as explained in the op and it should be fine.

I tried but no luck is there any other way to register ims?

sahir7860 said:
I tried but no luck is there any other way to register ims?
Click to expand...
Click to collapse
No apart from this i dont know.

sahir7860 said:
I tried but no luck is there any other way to register ims?
Click to expand...
Click to collapse
Flash Miui 9 latest through twrp and then reboot to miui 9. Aftet phone starts reboot to recovery and clean flash rom and volte will come .

Enable VoLTE code
*#*#86583#*#*

straightcore said:
Enable VoLTE code
*#*#86583#*#*
Click to expand...
Click to collapse
not working.
please help me.
volte active.
network support.
but it does not work.
I also tried it with apn.
location turkey.

raza_maestro said:
So, Many users of custom roms users reported to have broken volte suddenly out of nowhere and besides everything the volte wasn't working for them anymore. There was a workaround to turn off/on radio from engineering mode but it only lasted till the reboot.
After looking into the matter last night i found the feasible solution for it. It'll be little long so bear with me.
After fiddling with every firmware and custom rom i found out the cause of volte breakdown was the IMS status being not registered for some reason. You guys can check in IMS status option in 3 dot menu inside the engineering mode(*#*#4636#*#*). IMS services are responsible for calling and sms services over lte network.
The fix is quite simple and just needs to add two separate access points for jio sim.
Under access points delete all apns present and add these two new apns:
1) Name- ims APN- ims APN type- ims APN protocol- IPv4/v6 APN roaming protocol- IPv4/v6
Save these settings ( this apn wont reflect in the list after saving, so dont worry if it doesnt show up)
2) Name- Jio Internet APN- Jionet APN type- default APN protocol- IPv4/v6 APN roaming protocol- IPv4/v6
Do not change other values. Save this profile and select it.
Your volte will work flawlessly like before.
Hope it helps.
Click to expand...
Click to collapse
Thank You.. It worked perfectly.. :laugh:

pramod_cet said:
Thank You.. It worked perfectly.. :laugh:
Click to expand...
Click to collapse
Glad to help. ?

Related

Need some help with my MotoX - Not registering on my network

Hi Everyone,
I got me a used MotoX, a customized version with a back cover and a badgers logo (go badgers!)
Anyway, it worked fine in the US on At&t, it worked fine in Europe, but now i'm in Israel and i can't get it to work on my network. I tried to put in a friend's SIM from another network and it worked just fine, it's just my company's SIM that does not work -> the SIM is recognized, the device is looking for a signal but fails, and tells me that "No Service | Selected network (GOLAN T) unavailable"
My device is an xt1053
The network is Golan Telecom - (google that for the wikipedia page, xda wouldn't let me post the link cuz i'm a n00b)
I have no idea what could be done, i don't even know where to start looking up this problem, or what should i even be looking for...
Any sort of information that might be remotely helpful would be appreciated!
thanks in advance..
Try entering the APN data manually?
nhizzat said:
Try entering the APN data manually?
Click to expand...
Click to collapse
How do i do that? i didn't know that was even possible..
Have you checked what the network mode is set to? Try setting it to automatic.
Settings->Wireless& Networks>More->Mobile Networks
nhizzat said:
Have you checked what the network mode is set to? Try setting it to automatic.
Settings->Wireless& Networks>More->Mobile Networks
Click to expand...
Click to collapse
Thanks a lot mate, i did try that. Nothing.
Do you reckon it might be related to the rom installed? i mean, is there a chance that it would work if i install a custom rom?
It's also possible your network might be blocking the phone's IMEI and/or your SIM. Check your sim with another phone. If sim works then check with your network provider on the status the IMEI (and ask them to unblock it if it is indeed blocked by accident).
You can get the number in settings -> About phone -> Status or you can just dial *#06#

How do you enable VoLTE/VoWifi on Nokia 8?

Hello,
Have/use someone VoLTE/VoWifi on Nokia 8? I have no function to enable this option Mobile Networks or in another place. How do you enable this options?
Thanks
cyber-mix said:
Hello,
Have/use someone VoLTE/VoWifi on Nokia 8? I have no function to enable this option Mobile Networks or in another place. How do you enable this options?
Thanks
Click to expand...
Click to collapse
Just in case you do not know it, the carrier that you use, need to support it in general, and the carrier also have to decide that they want to support on that phone model.
henhoy said:
Just in case you do not know it, the carrier that you use, need to support it in general, and the carrier also have to decide that they want to support on that phone model.
Click to expand...
Click to collapse
Is the menu inaccessible/hidden entirely without carrier support? I can find the shortcut to "Enhanced 4G LTE" by searching the settings menu, but when I try to follow it I end up with the normal network settings (without the Enhanced 4G LTE option)
My phone is the TA-1004 version
HeinemeierDK said:
Is the menu inaccessible/hidden entirely without carrier support? I can find the shortcut to "Enhanced 4G LTE" by searching the settings menu, but when I try to follow it I end up with the normal network settings (without the Enhanced 4G LTE option)
My phone is the TA-1004 version
Click to expand...
Click to collapse
I believe so.
cyber-mix said:
Hello,
Have/use someone VoLTE/VoWifi on Nokia 8? I have no function to enable this option Mobile Networks or in another place. How do you enable this options?
Thanks
Click to expand...
Click to collapse
*#*#4636#*#* key combo will get you access to enable VOLTE/Video calling over WIFI.
Be careful of what you change.
Hello,
Thanks for sharing that I fo, I know that secret code but don't stay on VoLTE, seems as carrier have to enable that service on sim card, and they make available this services only on Samsung S8, Samsung S8+ and Xiaomi MI6. They are still on test with VoLTE
I think it depend on carrier.
I have two carrier, one doesn't have VoLTE and another have
In Cellular network settings, you can see one have "Enahnced 4G LTE Mode", but another not.
0nova said:
*#*#4636#*#* key combo will get you access to enable VOLTE/Video calling over WIFI.
Be careful of what you change.
Click to expand...
Click to collapse
i wonder if you tryed thise settings, to see if i could change to wificall, would that affect my mic, since after i tryed to set it to wificall mic is soooo ****ed
if so, how do i change it back is it possible to reset thoses settings
FYI: The official Oreo beta build enabled Enhanced LTE in my case (my provider is Telenor DK).
Needs to be carrier enabled

Wifi-Calling on Global Mi8

Hey guys,
yesterday I got my new Mi 8 <3 It's really nice...
I wanted to check if I can use wifi calling, but there is no option for it in settings. I can search for it but there is only text as you can see in the screenshot.
I checked the "hidden menu" under *#*#4636#*#* but the option is greyed out, too.
I'm living in Germany with Vodafone and wifi calling is included in my plan.
Any hints? Is wifi calling working for you?
Thanks
I think the Mi8 is not supported by Vodafone.
I don't get it :/ Other Xiaomi phones are working, too. I thought Xiaomi have to implement the profiles? I don't know why this is always so hard, Android does support VoWifi since some major versions natively
It was one point, why I bought the Mi8 instead of the OP6. I hope it will get it fast
baddevil2 said:
I don't get it :/ Other Xiaomi phones are working, too. I thought Xiaomi have to implement the profiles? I don't know why this is always so hard, Android does support VoWifi since some major versions natively
It was one point, why I bought the Mi8 instead of the OP6. I hope it will get it fast
Click to expand...
Click to collapse
if u are rooted u can try out thise lines into build.prop
# Debug Options
persist.dbg.ims_volte_enable=1
persist.dbg.volte_avail_ovr=1
persist.dbg.vt_avail_ovr=1
persist.dbg.wfc_avail_ovr=1
# Data Options
# Commented this line out as it was reported to break WiFi calling on some carriers. Not even sure if it's required to begin with.
#persist.data.iwlan.enable=true
# Radio Options
persist.radio.rat_on=combine
persist.radio.data_ltd_sys_ind=1
persist.radio.data_con_rprt=1
persist.radio.calls.on.ims=1
remember to check that permission is right
an make a reboot
I will root it the next days, thanks
Want to try xiaomi.eu Miui10 rom. Then I will test your changes.
-fluffy- said:
if u are rooted u can try out thise lines into build.prop
# Debug Options
persist.dbg.ims_volte_enable=1
persist.dbg.volte_avail_ovr=1
persist.dbg.vt_avail_ovr=1
persist.dbg.wfc_avail_ovr=1
# Data Options
# Commented this line out as it was reported to break WiFi calling on some carriers. Not even sure if it's required to begin with.
#persist.data.iwlan.enable=true
# Radio Options
persist.radio.rat_on=combine
persist.radio.data_ltd_sys_ind=1
persist.radio.data_con_rprt=1
persist.radio.calls.on.ims=1
remember to check that permission is right
an make a reboot
Click to expand...
Click to collapse
Hey man thank you very much for this. I tried it and it seems that is working. Νow in the signal bars I have a HD which I guess is because of Wi-Fi calling.
Hi Baddevil2!
Did you eventually manage to get WiFi Calling working with Vodafone Germany?
baddevil2 said:
Hey guys,
yesterday I got my new Mi 8 <3 It's really nice...
I wanted to check if I can use wifi calling, but there is no option for it in settings. I can search for it but there is only text as you can see in the screenshot.
I checked the "hidden menu" under *#*#4636#*#* but the option is greyed out, too.
I'm living in Germany with Vodafone and wifi calling is included in my plan.
Any hints? Is wifi calling working for you?
Thanks
Click to expand...
Click to collapse
Hi,
sorry didn't have time to root the device yet
I will inform you as soon as I have new information.
Maybe someone else can try it
omek07 said:
Hey man thank you very much for this. I tried it and it seems that is working. Νow in the signal bars I have a HD which I guess is because of Wi-Fi calling.
Click to expand...
Click to collapse
No, "HD" usually means VoLTE which is a completely different thing. Could you please try to enable flight mode and after that ONLY enable WiFi? If you are still able to make / receive calls, than WiFi Calling is working.
Tried build.prop change, Wifi-Calls enabled and preferred *#*#4636#*#* shows the switch enabled, but (three dots - IMS status) shows VoWifi "not available". VoLTE works same as before (without build.prop tweak). I checked both O2 and Vodafone Germany.
Seems there is no solution for VoWifi at the moment.
Come on, don't destroy my hopes Too bad...
DiePlage said:
No, "HD" usually means VoLTE which is a completely different thing. Could you please try to enable flight mode and after that ONLY enable WiFi? If you are still able to make / receive calls, than WiFi Calling is working.
Click to expand...
Click to collapse
My friend I don't think that the Wi-Fi calling works like that. The phone must recognize that you have sim card in your phone. I think that If you enable the aeroplane mode the phone doesn't recognize the SIM card. I am not 100% sure thought.
Yesterday I tried it with latest Xiaomi.eu rom and Magisk Module (to write build.prop entries).
I can enable VoWIFI in settings but if I try to call someone from wifi I only get an error message.
Very sad that it not work
Did anyone get this working?
I'm using Mi8 in UK on "Three" & "EE" - neither support the handset.
Can it be forced to work? Point me in the right direction if possible. Thanks
On MIUI ROMs it's not possible to get it to work. I installed Pixel3ROM some minutes ago and try to enable it there
Please keep us updated!
I didn't know it is possible to use different types of ROM on the phone.
Of course it's possible, but at the moment it still doesn't work Maybe I have to try another ROM
I'm on eu rom. when i install volte enabler magisk module (in repo), i got wifi calling feature in sim settings which actually works
On Xiaomi.eu ROM? I get Wifi-Calling switch, but phone does not register with IMS (Vodafone Germany).
Can you provide screenshot of ims status?
baddevil2 said:
On Xiaomi.eu ROM? I get Wifi-Calling switch, but phone does not register with IMS (Vodafone Germany).
Can you provide screenshot of ims status?
Click to expand...
Click to collapse
ur network have to support the phone
its the same in denmark
i have both volte an vowifi but they dont work
because my network provider dont support xioami mi8 an op6

Issues For T-MOBILE 6T Flashed INTERNATIONAL

List any issues that you might be having after flashing the international rom.
This will be a good area for people to report issues they might be having after flashing their T-Mobile 6T.
I'll be updating with the posted issues and resolutions thus far on this post, when I'm out of work.
revulv said:
List any issues that you might be having after flashing the international rom. So far the only issue I've had is no Wi-Fi Calling.
This will be a good area for people to report issues they might be having after flashing their T-Mobile 6T.
Click to expand...
Click to collapse
Already multiple threads and posts about this.
Oh there are? My bad. I didn't see anything specific in nature.
revulv said:
Oh there are? My bad. I didn't see anything specific in nature.
Click to expand...
Click to collapse
There's been conversions way before the new conversion methods, you will most likely have to comb through the threads and find them. But to answer your issue, I would try a reflash I've been on international side since 9.0.4 and wifi calling has worked for me on every update I've updated to.
I see it says VoWifi in the corner. But, there are no settings I can find to configure any type of "Wifi Calling". Even typing "Wi-Fi or wifi" into the settings search menu yields nothing in the realm of calls over wifi.
Thanks guys! I got it figured out.
revulv said:
Thanks guys! I got it figured out.
Click to expand...
Click to collapse
What did you do? I have the same issue.
tdwilli1 said:
What did you do? I have the same issue.
Click to expand...
Click to collapse
For the wifi calling?
revulv said:
For the wifi calling?
Click to expand...
Click to collapse
Yes, can't find the settings to turn the VoWiFi or VoLTE on/off. They're on currently but I don't need VoWiFi on at home.
One other thing that I see is both sims have same IMEI. It doesn't prevent it from being dual sim operable. But is there a way to change the second sim's IMEI?
tdwilli1 said:
Yes, can't find the settings to turn the VoWiFi or VoLTE on/off. They're on currently but I don't need VoWiFi on at home.
Click to expand...
Click to collapse
Go to settings - display - status bar - icon manager to turn on/off any icon you want.
Caltinpla said:
Go to settings - display - status bar - icon manager to turn on/off any icon you want.
Click to expand...
Click to collapse
That just turns the icon off not the actual setting. VoWiFi is still on if you disable the icon.
tdwilli1 said:
That just turns the icon off not the actual setting. VoWiFi is still on if you disable the icon.
Click to expand...
Click to collapse
From your phone keypad dial *#800# -> oneplus Logkit -> Function Switch -> enable both VoLTE and VoWifi switch. Restart your phone and try to locate them again in settings.
Caltinpla said:
From your phone keypad dial *#800# -> oneplus Logkit -> Function Switch -> enable both VoLTE and VoWifi switch. Restart your phone and try to locate them again in settings.
Click to expand...
Click to collapse
I already have done that and they still don't show up in the settings.
tdwilli1 said:
I already have done that and they still don't show up in the settings.
Click to expand...
Click to collapse
The last option I can think of is contact OnePlus support!
It's through sim and network if I call correctly. I switched back this morning to unlock my phone.
tdwilli1 said:
I already have done that and they still don't show up in the settings.
Click to expand...
Click to collapse
Caltinpla said:
The last option I can think of is contact OnePlus support!
Click to expand...
Click to collapse
WiFi & Internet > Sim & Network > Sim 1 (or 2) > Enhanced Communications
mdroid86 said:
WiFi & Internet > Sim & Network > Sim 1 (or 2) > Enhanced Communications
Click to expand...
Click to collapse
Sim and Network, like I said. Lol.
vineethrp said:
One other thing that I see is both sims have same IMEI. It doesn't prevent it from being dual sim operable. But is there a way to change the second sim's IMEI?
Click to expand...
Click to collapse
No
No offense op but this thread isn't useful.

Question Not seeing Network Preference under Enable Wifi Calling Tmobile USA

Hello
I just got this phone and set it up. Its a Global version 13.0.4 SKDMIXM.
I am on TMoblie USA - the phone is working great on LTE and 5G .
I am not able to see the Network preference under wifi calling where is can select Prefered Wifi Calling.
It appears that its running on default Prefered Cellular - because I can only see the VoLTE symbol on top.
Can someone help me in fixing this configuration to select Prefered Wifi Calling ? TIA
rogerga said:
Hello
I just got this phone and set it up. Its a Global version 13.0.4 SKDMIXM.
I am on TMoblie USA - the phone is working great on LTE and 5G .
I am not able to see the Network preference under wifi calling where is can select Prefered Wifi Calling.
It appears that its running on default Prefered Cellular - because I can only see the VoLTE symbol on top.
Can someone help me in fixing this configuration to select Prefered Wifi Calling ? TIA
Click to expand...
Click to collapse
Hello, I'm using a 11T Pro Dual SIM India model with India SIM in Slot 1 and TMO SIM in Slot 2.
I have not found the specific setting to make Wifi Calling "Preferred" but, my phone does indicate Vo WiFi even when I have Wifi connected and Mobile Data turned on too once Wifi Calling is enabled as below.
Apparently the Voice Over WiFi Settings (at least here on my phone) only show up for SIM 1, does not show for SIM 2.
Attached are sample screenshots where the Settings are under SIM 1.
Steps to get there-
Settings > SIM cards & mobile networks > Click on SIM 1
All the way down, last Setting is "Wi-Fi Calls" to enable "Make calls using Wi-Fi".
Hope this helps.
graphreak said:
Hello, I'm using a 11T Pro Dual SIM India model with India SIM in Slot 1 and TMO SIM in Slot 2.
I have not found the specific setting to make Wifi Calling "Preferred" but, my phone does indicate Vo WiFi even when I have Wifi connected and Mobile Data turned on too once Wifi Calling is enabled as below.
Apparently the Voice Over WiFi Settings (at least here on my phone) only show up for SIM 1, does not show for SIM 2.
Attached are sample screenshots where the Settings are under SIM 1.
Steps to get there-
Settings > SIM cards & mobile networks > Click on SIM 1
All the way down, last Setting is "Wi-Fi Calls" to enable "Make calls using Wi-Fi".
Hope this helps.
Click to expand...
Click to collapse
Thanks - I saw a post that had this diagram - In my case it has defaulted to
prefered cellular - so i dont get VoWifi
rogerga said:
Hello
I just got this phone and set it up. Its a Global version 13.0.4 SKDMIXM.
I am on TMoblie USA - the phone is working great on LTE and 5G .
I am not able to see the Network preference under wifi calling where is can select Prefered Wifi Calling.
It appears that its running on default Prefered Cellular - because I can only see the VoLTE symbol on top.
Can someone help me in fixing this configuration to select Prefered Wifi Calling ? TIA
Click to expand...
Click to collapse
Operators can disable this menu if they want to lock you onto Wifi preferred or cellular preferred. Does this only happen with this phone or does it also happen with the SIM in another Android phone?
rogerga said:
Thanks - I saw a post that had this diagram - In my case it has defaulted to
prefered cellular - so i dont get VoWifi
View attachment 5657751
Click to expand...
Click to collapse
There's a possibility of TMO-US not supporting WiFi calling on the Xiaomi 11T (Global), perhaps.
Although, I have been using various Unlocked phones (Nokia & Samsung) on TMO-US for the past few years & have practically never had issues with WiFi calling on any. Shall have to test it once I'm back. Won't be for some time.
Is your phone on the latest firmware? Try updating it to check if there's a new update available
which hopefully can solve your issue.
Couple of options to test, in case you have not already tested them-
a) leave WiFi Calling Enabled then disable the VoLTE feature and check if WiFi calling works?
b) disable Mobile Data, WiFi Calling enabled with WiFi connected and check if WiFi Calling works.
c) some users have had to ensure their E911 address is correctly in place on the TMO account too.
mici01 said:
Operators can disable this menu if they want to lock you onto Wifi preferred or cellular preferred. Does this only happen with this phone or does it also happen with the SIM in another Android phone?
Click to expand...
Click to collapse
I move from a One Plus 6 - it had the options
graphreak said:
There's a possibility of TMO-US not supporting WiFi calling on the Xiaomi 11T (Global), perhaps.
Although, I have been using various Unlocked phones (Nokia & Samsung) on TMO-US for the past few years & have practically never had issues with WiFi calling on any. Shall have to test it once I'm back. Won't be for some time.
Is your phone on the latest firmware? Try updating it to check if there's a new update available
which hopefully can solve your issue.
Couple of options to test, in case you have not already tested them-
a) leave WiFi Calling Enabled then disable the VoLTE feature and check if WiFi calling works?
b) disable Mobile Data, WiFi Calling enabled with WiFi connected and check if WiFi Calling works.
c) some users have had to ensure their E911 address is correctly in place on the TMO account too.
Click to expand...
Click to collapse
I had a working One Plus 6 - so I know TMO has VoWifi - I use it a lot due to poor reception at home .
The current workaround to force VoWIFI is
Turn On Airplane MOde
Turn ON WiFi only
then it works in VOWIFI with out any issues
I know I am missing a menu Item that can toggle this setting . I would prefer having that setting but its not a breaker for now . The phone works with all the Network features of TMO , LTE , 4G , 5G etc . No visual voicemail thats all.
Thanks
rogerga said:
I had a working One Plus 6 - so I know TMO has VoWifi - I use it a lot due to poor reception at home .
The current workaround to force VoWIFI is
Turn On Airplane MOde
Turn ON WiFi only
then it works in VOWIFI with out any issues
I know I am missing a menu Item that can toggle this setting . I would prefer having that setting but its not a breaker for now . The phone works with all the Network features of TMO , LTE , 4G , 5G etc . No visual voicemail thats all.
Thanks
Click to expand...
Click to collapse
Perhaps you might want to give this a try-
Phone Dialer- *#*#86943#*#* VoWiFi carrier check disable
From here- https://forum.xda-developers.com/t/wifi-calling-volte-on-mi-9.3917887/
(or here too https://www.hardreset.info/devices/xiaomi/xiaomi-mi-11/codes/)
graphreak said:
Perhaps you might want to give this a try-
Phone Dialer- *#*#86943#*#* VoWiFi carrier check disable
From here- https://forum.xda-developers.com/t/wifi-calling-volte-on-mi-9.3917887/
(or here too https://www.hardreset.info/devices/xiaomi/xiaomi-mi-11/codes/)
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Thanks - this code is what got me to where I am now . I think from other articles - the mbn config may require some tweaking - but it refuses to give me access to it when i use *#*#663368378#*#*
Same access issue here too.
Wish you luck.
Pinging to see if there is a soln. in future.

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