Jio4g voice not working - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

I am using k20 pro 6gb indian variety.
For some network issue i am using jiofi .
I am unable to use jio 4g voice after upgrading to miui 11. I tried in evolution x rom but not working.
In poco F1 with miui 11 jio4g voice is working fine.
Is their any way to fix this issue.
Thanks in advance.

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Wifi Call on MI 9

I'm currently using the MIX 2S with MIUI 10 in combination with O2 / Eplus. The provider does defiantly support the WIFI Call, but MIX 2S does not support it.
What's about MI 9. Does it support in combination with the actual MIUI ROM the WIFI Calls?
Yes, using it with Telekom Germany (D1).
Just enter *#*#869434#*#* in dialer and enable it in phone settings.
Thank you. It's the same approach for Mix 2s, but it' not working with O2/Eplus even if the provider does support the feature. So I assume Wifi-Call wil also not work on Mi 9 with O2/Eplus.
wifi calls working great with SFR (france)
WiFi-Calls on Mix 2S and O2/Eplus are working also great with LineageOS 16.0 too, which is available for MIx 2s. But it's not working with MIUI.
I'm sure it is the same situation for MI9 WiFi Calling. Or have somebody managed to enable MI9 (MIUI) Wifi-Calling with O2/Eplus?
Wifi calling on o2 Germany works after you enter *#*#869434#*#* in the dialer and then check sim settings and enable there. However it is quite spotty, sometimes it does not register after connecting to WiFi or loses the connection after some time, but it definitely works, I performed several calls in flight mode and only WiFi enabled.

MI 9 Chinese Version and Google FI/TMobile

Anyone here running the Chinese Version and using either Google FI or TMobile?
Any issues with 4G LTE, VoLTE or WiFi Calling?

VoLTE in Global Stock ROM - Yes or No?

Hi,
I do not get VoLTE working on my Redmi 4X (last official ROM MIUI Global 11.0.2 Stable NAMMIXM). I tried with two SIM cards (1x Telekom Prepaid, 1x Klarmobil Telekom). Both of them support VoLTE and VoWifi in my father's Redmi 6A, so my 4X is the culprit.
I entered this *#*#VOLTE#*#* code which disabled carrier check and enabled VoLTE in the menu (see screenshot). But whenever I start a call, the phone switches to 2G or 3G.
Should VoLTE work in the 4X or not? I read some information, that Xiaomi morons broke this functionality with an update and never repaired it, but don't know whether this is true.

Question 5g working or not

My OnePlus 10 Pro Indian model doesn't seem to get the jio sim to enable 5g.
But my mi11 ultra works on 5g in the same area.
Tried resetting still the same
Can someone guide me if there is any process needed to be done to get the jio 5g to work
Am running the latest oxygen OS
5g takes time to get activated on the jio sim
It wasn't the phones problem

Question Jio 5g issue

Jio 5g issue...after 4g cant connect 5g...need every time reboot to get 5g...any solution? Need help
Bro, have you found any solution yet? I have the exact same problem with my Note 12 Pro 5G. I wonder if my handset is faulty or the network.
Having same issue... WIth Jio sim.
Me too bro
Hi, update about the jio sim issue.
It has been fixed with a security update came today.
i am also using 11i, xiaomi told to activate SA mode, but still it doesnt help, updated to miui 14 and android 13 also.

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