Got my Mi Max 3 in December. Registered in Xiamoi, waited for 360 hours to get the bootloader unlocked. Then rooted it, installed TWRP, upgraded to EU pie beta rom and finally upgraded to Havoc 2.0 phh-treble Pie rom .
The biggest problem from me is that VoLTE does not work. Have been trying to fix for past 10 days. Though I have not fully succeeded, my findings are as follows:
1. VoLTE/VoWifi related options itself have to be enabled on the UI.
For this I edited the files (use es explorer) /System/build.prop
persist.dbg.ims_volte_enable=1
persist.dbg.volte_avail_ovr=1
persist.dbg.vt_avail_ovr=1
persist.dbg.wfc_avail_ovr=1
persist.radio.rat_on=combine
persist.radio.data_ltd_sys_ind=1
persist.radio.data_con_rprt=1
persist.radio.calls.on.ims=1
persist.sys.cust.lte_config=true
persist.dbg.volte_avail_ovr=1
persist.dbg.ims_volte_enable=1
persist.radio.volte.dan_support=true
persist.data.iwlan=1
persist.data.iwlan.enable=true
persist.data.iwlan.ipsec.ap=1
persist.radio.calls.on.ims=1
persist.radio.data_con_rprt=1
persist.dbg.vt_avail_ovr=1
/Vendor/default.prop
persist.dbg.ims_volte_enable=1
persist.radio.videopause.mode=1
persist.data.iwlan.enable=true
2. Run ims service, by installing ims.apk file.
3. Checked with service provider that the APNs are correct. I am on Airtel.
4. Swapped my sim with another sim. VoLTE did not work. So the problem is with the device.
5. The current status is that the ims service is not running. See the screenshot.
To summaries, one has to fix three aspects to get VoLTE/VoWfi:
1. From service provider -> Ensure correct setting are present.
2. At user interface level -> By editing the prop file.
3. IMS registration -> This is still not working. The mbn needs to support the service provider.
Has anyone managed to fix this? For me no VoLTE is a deal breaker and if it does not get enabled, I will shift to EU ROM. I am on 4G and when I receive/make calls, the network switches back to 3G. This network switching has an annoying lag. :crying:
There's another issue you need to address.
GSIs use CAF's VoLTE implementation afaik which (again... just from what I read) isn't compatible with Qualcomm's proprietary implementation.
I moved to Xiaomi.eu rom. Did the same setup listed above. Did not see VoLTE.
Inserted Jio sim and VoLTE started working!
I asked Airtel and they categorically refused to give me VoLTE. Folks, also please check that your service provider has enabled VoLTE.
Hi I am new to this and have no IT background, I have just bought mi9se I have latest firmware 11 global version all updates are done.
I have entered the codes *#*#86583#*#*
*#*#869434#* to 'disable' VolTE and WiFi - rebooted phone and then went to the SIM card settings but there was then no setting for WiFi calling. Pls help.
Thanks
Moni
Hello
I’ve just got my fingers on a Poco F3 but I can not call over 4G Volte ?? Someone who knows how to??
Thank you
Go to Settings -> SIM cards & mobile networks -> Select your SIM -> Use VoLTE
thank you for reply
I dont have that option?
Have you tried * # * # 869434 # * # *?
What is that number??
*#*#86583#*#* in dialer it will turn off volte check for your carrier. Then you will have it available in settings
It worked, thank you
After updating to OOS 12.0.0.0 WiFi Calling and VoLTE are gone. Does anyone also have this problem? has someone been able to fix it?
I feel differently - WiFi calling and volte started working after update (EU version). I did factory reset after update.
HubertGT said:
After updating to OOS 12.0.0.0 WiFi Calling and VoLTE are gone. Does anyone also have this problem? has someone been able to fix it?
Click to expand...
Click to collapse
this is a known problem
For me, VoWifi is working but VoLTE and 5G is not.
OnePlus logkit is not working anymore.
*#*#4636#*#* is not working either.
Since codebase merged with ColorOS, EngineeringMode is changed to *#899# but it has limitation (login required) now.
Maybe we can open it with setprop persist.sys.adb.engineermode 1 but root is required.
5G test switch is *#54794824#
In NL I got the following results upgrading from OOS 11 to 12 without factory reset:
* OOS11:
5G for both KPN and Vodafone NL
VoLTE+VoWiFi for both KPN and Vodafone NL
* OOS12:
VoWiFi for Vodafone NL
VoLTE for both KPN and Vodafone NL
VoWiFi for KPN
5G, also both KPN and Vodafone NL
AndroPlus said:
Since codebase merged with ColorOS, EngineeringMode is changed to *#899# but it has limitation (login required) now.
Maybe we can open it with setprop persist.sys.adb.engineermode 1 but root is required.
5G test switch is *#54794824#
Click to expand...
Click to collapse
I didn't find a way for direct contact, so I reply you here. Do you now any way to use qpsp on op9 pro? I just moved from color os to oxygen (after doing it the other way around) and I just have asian bands, so I want to re enable the ones I lost during the change (and enable 5G also)
here i´m to wait for this..
is there any way to activate volte provision (grey out) on OOS12/ColorOS12? tried installing the old logkit apk but it says conflict with an existing package and reboot to FTM does only reboot to the OS.
Was anyone able to do this without factory reset? I don't want to loose everything
zeitos said:
Was anyone able to do this without factory reset? I don't want to loose everything
Click to expand...
Click to collapse
only solution right now for A12 for carriers with Volte not working by default is to root the device and flash a module to activate the Volte.
Hi,
I don't have the Volte and vowifi options in the settings menu. So i tried the *#*#.... and nothing happen.
Otherwise i fond this phone to have a bad reception and difficult to phone with, so vowifi is a solution for me
when i'm at home.
Thanks in advance.
VoLTE *#*#86583#*#*
VoWIFI *#*#869434#*#*
use miui dialer or google phone
Thanks,
Already tried codes but i don't have the Miui dialer ont the global version and don't find a way to install it.
Open Modem test tools by using *#*#663368378#*#* code in dialer > Open MBN config loading and activating tool > select mbn_eea.txt for SW MBN > tap on validate > wait some secs for update then reboot phone
jamalikos1 said:
Open Modem test tools by using *#*#663368378#*#* code in dialer > Open MBN config loading and activating tool > select mbn_eea.txt for SW MBN > tap on validate > wait some secs for update then reboot phone
Click to expand...
Click to collapse
Does this solution require root? For me it says "Please apply to modem staff to get control rights." I am also facing constant disconnects, poor mobile reception etc. since the latest updates. It is really driving me crazy and I already tried resetting APN, mobile connections, full download of update etc. The only thing I have not tried yet is a full wipe as this will take a lot of time to reconfigure all the apps. But might be a further solution...
like for me "Please apply to modem staff to get control rights."
lipat34 said:
Thanks,
Already tried codes but i don't have the Miui dialer ont the global version and don't find a way to install it.
Click to expand...
Click to collapse
did you use google phone?
3zozHashim said:
did you use google phone?
Click to expand...
Click to collapse
You suggest i try to use my sim card in a google phone to activate the Vo*** ?
lipat34 said:
You suggest i try to use my sim card in a google phone to activate the Vo*** ?
Click to expand...
Click to collapse
Sorry i don't understant what you mean, it's the default dialer for miui global. So it's already installed.
go to settings -> sim cards and mobile networks -> (click on sim card 1)
VoLTE and VoWIFI should be there
nope, this is the problem. When i dial the codes nothing happen and no vo*** options in settings.
I think those settings have been removed from MIUI, but phone codes still works if you enable them.
Try this: go to settings / system info / all specifications / click 5 times on internal memory
This will open a services option for sim 1 and sim 2
Check if volte and/or wowifi are enabled.
Then use the codes provide few messages above via phone app and go back to this service screen and re-check if volte and/or wowifi status are changed.
It worked for me.
Thanks for the tips, but not working for me
Hi there. Same problems here. The manual activation with *#*#VOLTE#*#*, which overrides the network settings, worked with MIUI 12.5, but since MIUI 13 the command does not work anymore.
So now you only get VoLTE if your network provider gives it to you.
I see you have a french language selected, so you might be using Orange or Sosh network. They don't support VoLTE on the F3... I contacted support, and they activated a switch on my phone line. And I had VoLTE on the F3 with MIUI 13 with Sosh for a few days, before it went away again...
I'm using Bouygues network and volte is activated on the network. My problem is VoWIFI, since i have a very bas reception at home. Otherwise the network connection is very bad and i always have blanks in phone calls.
Anyway, if you enable Volte or vowifi but your carrier doesn't support it or didn't enable it for Poco F3 the services, them simply couldn't work
It's true but they're activated by the carrier. VoLTE works sometimes and VoWIFI doesn't work.
I think i have to change this phone cause i can't use it. Too many network lost ...
Sad but true.. Poco is simply a mess..
My carrier said that Poco F3 is not supported by it's network (that needs a specific firmware update to support any single device), but it came out my F3 can connect to volte and vowifi
Just want to share my experiences before I am using poco x3 and I enable vowifi in the setting, when making call via wifi I can hear the other person but they cannot hear me, it turns out that poco x3 is not officially supported by my network provider... Months later I changed phone to poco f3 as it's supported by network provider and the vowifi work flawlessly since then..