VoLTE compatibility and custom ROMs - Samsung Galaxy S8 Questions and Answers

I have been informed by my phone service that T-Mobile is decommissioning 3G, defaulting voice to VoLTE. With the sate of custom ROMs, aside from modified stock ones, my S8 (G950F/D running Havoc currently) will stop working properly.
So, why doesn't VoLTE work on AOSP/Lineage? What's missing? Why do some phones, like a potential upgrade for me at some point: the Realme X2 Pro, have working VoLTE (mentioning RIL?).

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Best Nougat or Marshmallow rom with VoLTE support (SM-G900W8) (klte/kltecan) ?

Hey guys, can anybody recommend me a custom rom which supports VoLTE and is based on Nougat or Marshmellow? I have SM-G900W8 (klte/kltecan). My operator is Jio and it only supports VoLTE calls! CM 13 does not support VoLTE and after configuring APN, I cannot use data connection (APN settings are correct). CM 14.1 help me use data connection but it also does not support VoLTE. In addition there are a lot of bugs in CM 14.1. Any help will be appreciated.
Galaxy S5 (SM-G900T)
For the past 4 years I haven't found any roms that carries Volte Which is very disappointing and very important when it comes to being on a call and using the web. For the past few month's I believed to try every rom that's available and no Volte which is ridiculous. However, I'm writing this post in gud hopes that this matter would be taken into consideration. PS Thanks!

Which Custom ROM for ZE500KL/Z00ED supports VOLTE function?

SO it turns out ASUS will not provide official VOLTE update for ZE500KL (5 inch Zenfone Laser), while they have already provided it for the 5.5 inch variant with the same modem and processing hardware. I don't know why this partiality is done by ASUS. I purchased the 5 inch variant only for better handling.
At this moment, I am is desperate need of the VOLTE feature on my phone due to the free calls provided by JIO India. The JIO4G voice app is a battery drainer, super unreliable and most of the time I miss important calls.
My phone is still under warranty and I am willing to void it by unlocking the bootloader, only if there is any custom ROM for ZE500KL available that fully supports VOLTE. I found some RR and LOS ROMS by master @audahadi, but I am not sure they support VOLTE.
Could anyone kindly confirm if any, just any, ROM is available that supports VOLTE on Zenfone Laser 5 inch (ZE500KL/Z00ED)?
Bro I just have tried almost all the cstm roms for z00ed but there is no volte in anyone i found..
I have requested the devs for the same but got negative replie..they said it's not possible untill asus releases the base bands....
Could u suggest a better custom rom
mahin.17 said:
Could u suggest a better custom rom
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Try lineage os. I'm a newbie so i dont know if i am a right person to answer this. But I've used LOS for about a week now and it is far better than asus stock rom. Soon they will release official Oreo update.
What version of LOS did you use bro? What unit are you using, Z00ED/ZE500KL? Newbie here

Does flashing custom rom as lineage os or aicp activate VoLTE?

Plz explain guy, i kaafi wanna know after i flash custom is everything working fine? Which rom is best for Moto x style?
No... VoLTE works just fine on most ROM's including stock, unless your carrier is Jio, then it is not supported in the modem firmware (yet), your actual installed ROM is not relevant as long as it supports VoLTE. There are rumors there might be a Nougat "patch" to enable it, but I would put that in the realm of hopeful user's wishes rather than truth.
If the Moto G 2015 is any indication, once it is working in stock with stock modem firmware, developers can likely get it working in custom ROMs but it might take some time (it took nearly a year to get it working in that device after the device supported it)

Suitable Rom?

Hello Everyone, Couple of weeks ago I tried few custom ROMs (lineage, invivta, RR, aosp extended) from here and they're all pretty good. Some have no volte support and can't switch network to 2g. But are there any custom ROMs which have VOLTE support and in which I can change network to 2G?
Amogh Thambi said:
Hello Everyone, Couple of weeks ago I tried few custom ROMs (lineage, invivta, RR, aosp extended) from here and they're all pretty good. Some have no volte support and can't switch network to 2g. But are there any custom ROMs which have VOLTE support and in which I can change network to 2G?
Click to expand...
Click to collapse
InvictaOS have VoLTE support and 2g switching(only problem with xt1643 in India, other countries are able to switch 2g)AFAIK, cause Silesh.Nair fixed it. Please search in the rom thread of InvictaOS, you find answers for both problems.

VoLTE not working on any custom ROM (lavender)

HI,
I want to ask wether VoLTE is working for you IF you have Global RN7, With custom ROM (and your carrier and SIM supports VoLTE of course).
I have Global RN7 running on xiaomi.eu based ROM.
Before I flashed ROM from xiaomi.eu based the VoLTE was working fine for me, after I disabled VoLTE carrier check. But now with the xiaomi.eu based ROM, VoLTE no longer works for me. I already asked on the forum for my rom - that is miuios.cz - but it seems they do not know what to do with it.
Besides I tried a few other MIUI base ROMs as well as pure android based like LineageOS for example but VoLTE did not work in ANY custom ROM.
So, has it occured to you too, or your VoLTE is working just fine on custom ROM?
Do you know any way to fix this?
Thanks!
search around for the build.prop edit to allow it or you can try the magisk module voenabler-v1.8.zip https://github.com/edgd1er/voenabler/releases be sure to read the README.
if it still doesnt work refer to this thread:
https://forum.xda-developers.com/redmi-note-7/help/volte-wifi-calling-redmi-note-7-t3931119
Msprg said:
HI,
I want to ask wether VoLTE is working for you IF you have Global RN7, With custom ROM (and your carrier and SIM supports VoLTE of course).
I have Global RN7 running on xiaomi.eu based ROM.
Before I flashed ROM from xiaomi.eu based the VoLTE was working fine for me, after I disabled VoLTE carrier check. But now with the xiaomi.eu based ROM, VoLTE no longer works for me. I already asked on the forum for my rom - that is miuios.cz - but it seems they do not know what to do with it.
Besides I tried a few other MIUI base ROMs as well as pure android based like LineageOS for example but VoLTE did not work in ANY custom ROM.
So, has it occured to you too, or your VoLTE is working just fine on custom ROM?
Do you know any way to fix this?
Thanks!
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Test this
VoLTE *#*#86583#*#*
Sent from my Mi Note 10 using XDA Labs

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