Jio Sim not working after one UI 4 Android update in S21 Ultra update today

[SudarshanSupe]

Same jio sim works in other mobile. As well other sim works in Samsung S21

[Roshan5]

My Airtel Data Internet Not Stable After Updating One UI 4.0 Android 12.
Automatically switching 4g Plus Volte to 2g E often.
Even after Factory Reset Problem Not Solved.

[SudarshanSupe]

S21 Ultra - after update Volte has gone. Appears this is the problem for jio sim to use in India for USA phone.
But other JIO SIM works fine in this updated phone.
Let see, now I changed physical sim and after activation need to verify.
Before, converted physical jio sim to esim , calls did not work but network, data worked.

[Abhishekanand]

You need to change the CSC of ur device to INS using odin.

[SudarshanSupe]

Be careful - USA phones in India S21 Ultra one UI 4 Android update - after update JIO SIM does not work to receive & make calls, moreover other apps do not detect JIO SIM in the device!!!!

[Krishna43]

Thank u for starting this thread. I have the exact same issue on s21 plus after update. Are there any JIO plans that don't need VoLTE? Hope they can roll out a fix soon in OneUI. Else the whole phone is pointless.

[SudarshanSupe]

No, there are no JIO plans without VoLTE.
I started making a tweet on Twitter @SamsungIndia.
Otherwise, we keep on suffering unless they realize & act on issue to resolve.
With all this, it is new kind of level to which Samsung is progressing 🤔 meaning going in line with Nokia...rather than iPhone

[SudarshanSupe]

Twitter Requested Samsung to get us the solution quickly.

[SudarshanSupe]

https://twitter.com/SudarshanSupe/status/1465589010462494724?t=5_-cDoSMxb-86DjtlCowHA&s=19

[SudarshanSupe]

Started to update @Samsung India as they might take into consideration and bring solution, at the earliest.

[cs-member13]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We acknowledge your query and apologize for the same. Please visit this mentioned link to resolve your device issue: https://www.samsung.com/my/support/mobile-devices/why-sim-card-cannot-be-detected/#:~:text=Loose%20S....

In case the issue still occurs. Please register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support