Wi-Fi Calling (VoWiFi) Not Working on S24 Ultra with Jio SIM

[Messikuttan]

Hi everyone,

I'm facing an issue with my new Galaxy S24 Ultra (purchased exactly one month ago). I previously used a Galaxy S20 FE 5G, and Wi-Fi calling (VoWiFi) worked flawlessly on the same Wi-Fi network with my Jio SIM.

However, on my S24 Ultra, the Wi-Fi calling feature is not working at all. Even when I disable mobile data or enable airplane mode with Wi-Fi on, VoWiFi never activates — the phone keeps showing VoLTE only.

To clarify:

Phone: Samsung Galaxy S24 Ultra

Previous phone: Galaxy S20 FE 5G (VoWiFi worked perfectly)

SIM: Jio SIM

Issue: VoWiFi is not activating on the S24 Ultra, even on the same network

Tried:

Turning off mobile data

Using airplane mode + Wi-Fi

Restarting phone and Wi-Fi router

Checking that Wi-Fi calling is enabled

Same Jio SIM and Wi-Fi as before

It seems like Wi-Fi polling isn't working, or the phone is simply not switching to Wi-Fi for calling.

I've attached a screenshot showing that even under Wi-Fi, the phone remains on VoLTE.

Has anyone else faced this issue with the S24 Ultra and Jio? Any suggestions or fixes would be appreciated!

Thanks in advance!

[Messikuttan]

How?

[amit59684]

Search network reset in your setting you will get it from there.

[Wodehouse · Accepted solution]

Go to settings > about > reset > reset mobile network settings.
Again about > reset > reset WiFi and blue tooth settings
Now settings > Connections > mobile networks > VoNR on SIM.

If this reply answered your query please tap 3 vertical dots to the right of my reply and tap "Resolved/Accept as a solution". Thank you 😊

[Messikuttan]

Thanks brother this worked 😭❤️

[Wodehouse]

Good to hear 😊

[goodthings]

Please reset network setting of both Sim one by one and than reset all settings of your's device in general management settings also Flight ✈️ mode on n off one time also restart your's device without any Sim in slots also interchange Sim in slots also turn off power saving mode also optimize your's device in device care too also clear catche of all apps manually also reset wifi and Bluetooth settings too also update your's all apps then try to it's again. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.

[goodthings]

Your's most welcome to here.