Question VoLTE not working since OneUI 4.0 Beta installation

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Kanwal85

Member
Dec 2, 2021
37
0
i suggest all those who are still on oneui 4 - pls submit an error report on the samsung members app with all the details - esp mentioning that its an unlocked phone bought in the US and not working when travelling to other countries like India.

To submit report - open Samsung Members app->Get Help (lower right)->Error report
But our samsung member app is Indiana so eroor report will also goes to samsung India and they already told us that can't do anything in this
 

panks_4ever

Member
Oct 19, 2011
8
0
Mumbai
But our samsung member app is Indiana so eroor report will also goes to samsung India and they already told us that can't do anything in this
I am following this thread since last week once I got the android 12 update, it broke WIFI calling and I am currently in India using Jio which left the phone useless. Had multiple visits to the Jio store. One solution they offered was to install the JioCall App which temporarily fixes the issue and you can make / receive calls. As a permanent solution i thought porting out to VI / Airtel was better option than to flash new roms / downgrade to Android 11.
 

Kanwal85

Member
Dec 2, 2021
37
0
Hey - Please let us know if you happen to flash the same rom and whether the issue got solved or not.
Bro still I didn't Arrange PC/Lapp.. but on samsung community I saw One of the user downgraded to ONE UI 3.1 ..
Hey - Please let us know if you happen to flash the same rom and whether the issue got solved or not.

See this link
 

mmddzzjj

Member
Mar 16, 2020
15
2
Samsung Galaxy S21 Ultra
在国内升级oneui4.0后不能双卡了。我确定oneui4.0有很多bug。

Translated by GT: After upgrading oneui4.0 in China, dual cards can no longer be used. I am sure that oneui4.0 has many bugs.
 
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baazigarg

Member
Nov 28, 2021
8
1
Samsung Galaxy S21+
I think its finally getting worked on. They told their trchnical team is aware of this issue finally.
 

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dp1989

Member
Oct 20, 2013
7
1
Just got system configuration update and it has fixed this issue. I would suggest to wait as fix has already been released
 

Vazovski2007

Member
Dec 3, 2020
36
0
Just got system configuration update and it has fixed this issue. I would suggest to wait as fix has already been released
Hi, Thanks for your information that would help
unfortunately I have waisted lot of time to find out the reason and U firmware helped, could you be so kind to check 1 thing if you are still on U1 ? and VoLTE is working? if yes please can you tell us if the phone number is visible in About Phone > Phone number?
because on U1 firmware it was never being visible even on android 11
 

dp1989

Member
Oct 20, 2013
7
1
Hi, Thanks for your information that would help
unfortunately I have waisted lot of time to find out the reason and U firmware helped, could you be so kind to check 1 thing if you are still on U1 ? and VoLTE is working? if yes please can you tell us if the phone number is visible in About Phone > Phone number?
because on U1 firmware it was never being visible even on android 11
Yeah, I have U1 model and volte does work now. However there's a bug if you are using volte wifi calling. In case, you connect your device to another wifi, volte goes away and only fix is to reboot the device. Regarding phone number, yeah I can see it in about phone.
 
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Vazovski2007

Member
Dec 3, 2020
36
0
Yeah, I have U1 model and volte does work now. However there's a bug if you are using volte wifi calling. In case, you connect your device to another wifi, volte goes away and only fix is to reboot the device. Regarding phone number, yeah I can see it in about phone.
Oh thats super, im not using Volte Wifi call, im using only Volte for calls vida data connection
 

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    Hello All,
    I posted this in Samsung Community, but unfortunately none was able to help. I am hoping XDA members could help fix this issue.

    I am facing a strange problem with my S21 Ultra Unlocked which was directly bought from Samsung. I had enrolled into OneUI 4.0 beta when I was in the US. I was using Sprint connection then.

    I had to travel back to my home country (India) and I am using an Airtel sim card (LTE) here. Now, the strange problem is that LTE (data) works here fine. But, VoLTE is not working. The network changes to 2G for phone calls. I am assuming that the auto-switching bands which was introduced in OneUI 4.0 is causing the problem.

    Using Smart Switch PC, I rolled back to One UI 3.1. VoLTE and WiFi calling started to work again. But, soon after I got update notification for One UI 4 beta. To confirm that it is indeed an issue with One UI 4, I installed it again. And as expected, I am not getting VoLTE or WiFI calling again.

    Since I changed from Sprint to Airtel, I am not able to withdraw from the Beta program as well. I am getting the error "One UI beta features aren't available because your service provider has changed".

    Also, I am not sure what the final One UI 4 will offer. For the first time in my life, I am seeing an Android upgrade causing my phone to not able to connect to VoLTE.

    I am also attaching the screenshots of Phone Information. As you can see, in OneUI 3.1, VoLTE and WiFi calling are provisioned. But in OneUI 4, both are not available. I am assuming the issue is because IMS is not registered. But, I am not able to find how this can be fixed.

    Thanks in advance for your help.

    Thanks,
    APS

    #volte #samsung #s21ultra #oneui #oneui4 #imsservice #ims #airtel #oneuibeta
    1
    Hi, Thanks for your information that would help
    unfortunately I have waisted lot of time to find out the reason and U firmware helped, could you be so kind to check 1 thing if you are still on U1 ? and VoLTE is working? if yes please can you tell us if the phone number is visible in About Phone > Phone number?
    because on U1 firmware it was never being visible even on android 11
    Yeah, I have U1 model and volte does work now. However there's a bug if you are using volte wifi calling. In case, you connect your device to another wifi, volte goes away and only fix is to reboot the device. Regarding phone number, yeah I can see it in about phone.