VoLTE not working after Samsung September update

[Members_YQpRhDe]

I installed September update this morning (after receiving the notification), and since then, the VoLTE is not working anymore:

- I can see it is still activated in the network setup

- I switch on/off the sim card, the airplane mode, reset the network settings, restarted the phone,etc. Nothing worked

- the same SIM card is working fine with VoLTE on a iPhone

Any advice how to solve this issue?

[BandOfBrothers]

Can you try this @Members_YQpRhDe 

> Clear Cache Files from the phone's System Partition Section  > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too. 

[-Robot-]

There is a Sept update? I havent got it yet

[Members_YQpRhDe]

Thank you for the answer, unfortunately, the issue persists.

Is there anyway to come back to the previous version?

[Members_YQpRhDe]

There is an update release on 1st September (still with security patch from 1st August)

[-Robot-]

Thanks

[zrusky]

Same issue on my M33 5G after the September update. VoLTE is  not working with both the operators in the UAE.

[zrusky]

Even I would like to do the same.

[Members_2m7KPLh]

I have the exact same issue. Had a Samsung accredited engineer out to sort why my 4g was not working. He replaced several parts in my S22 and then found a VoLTE registration issue and recommended I tried a new SIM card.

I have tried a new SIM and that has made no difference. The engineer insists it’s not the phone and my mobile provider says it’s not the network. I’m now stuck with a phone with an upload speed of 0.00 mbps. 

[Kavita Lal]

Hi! I've now got this issue from the March 2024 update! It's been a week, and I've done everything to no avail. 

Were you able to resolve the issue with samasung?