[Guide] Enabling VoLTE/VoWiFi (deprecated)

[elmik]

Hi after doing everything is neccessary to have root to use volte?

 

[HomerSp]

@HomerSp Did you have to do anything specific to the MBN file you took from the Mi 9T? If not, you might have just come up with a generalized way of enabling IMS features for a lot of other phones with QPST access!

It's stock - no changes needed. You can quite easily make changes though if needed.

I still need to look at ways to make the settings persist because I have a feeling that they will reset after an update, but this can wait a bit - I'll do the updated guide first.

Hi after doing everything is neccessary to have root to use volte?

Root is only needed to do the initial setup, it won't be needed after that. But see my text above, because I have a feeling you might have to redo it after an update.

 

[jinsiik]

Sounds more like a computer issue. Try restarting comp, and phone.

yeah, tried restarting both, efs explorer is telling me that the phone does not support an embedded file system. It use to work and i was able to browse through it

 

[xbamaris1`]

yeah, tried restarting both, efs explorer is telling me that the phone does not support an embedded file system. It use to work and i was able to browse through it

Same boat as you. anything I try to get any information with ESF Tools errors out with Operation Timed out, Never been able to view anything from QPST from it even if it has SDM855(0). Is there something we're missing?

 

[stealthj]

its funny, on google Fi, I just turn on airplane mode and turn on wifi, and wifi calling works. phone non rooted. bootloader locked,

but it doesn't work on my tmobile sim. the google fi app has a toggle to turn on wifi calling..

 

[sesz]

I was finally able to get it to work for tmobile. Thanks @HomerSp My issue was I have a new installation of windows 10 and the older versions of c++ (2010) so I installed the (2013) c++ (86 & 64 versions) and had no issues after that.

https://imgur.com/a/zEgNnlF

 

[TawkinTrash]

Preface

Prerequsities
* You must have root. There are several threads on how to do that, so look those up if you need help.

Regards

What's the best guide to follow to root this thing for VoLTE?

 

[resident0915]

@HomerSp You think we could enable band 66 which is missing on the tencent version? I am assuming hardware is the same, just a setting. Thanks for all your work.

The modem hardware is different. The tencent version has less pcb layers since less bands are required to service just China.

 

[VZTech]

The modem hardware is different. The tencent version has less pcb layers since less bands are required to service just China.

I am not disagreeing with you. But i know in the past some phones just needed some edits in qpst to enable different bands. You sure about this? Or just a guess?

 

[HomerSp]

I am not disagreeing with you. But i know in the past some phones just needed some edits in qpst to enable different bands. You sure about this? Or just a guess?

Try grabbing EfsTools from here: https://forum.xda-developers.com/rog-phone-2/how-to/guide-enabling-volte-vowifi-v2-t4028073 and download lte.json from here: https://gist.github.com/ccf006e4000f7ab237ec7adcef820e45
Put lte.json next to EfsTools.exe and run this:

EfsTools.exe setModemConfig -p lte.json

And then reboot. No idea if this'll work, but it's worth a try at least!

 

[VZTech]

Try grabbing EfsTools from here: https://forum.xda-developers.com/rog-phone-2/how-to/guide-enabling-volte-vowifi-v2-t4028073 and download lte.json from here: https://gist.github.com/ccf006e4000f7ab237ec7adcef820e45
Put lte.json next to EfsTools.exe and run this:

EfsTools.exe setModemConfig -p lte.json

And then reboot. No idea if this'll work, but it's worth a try at least!

My phone is being repaired, will have it back next week. What actually is this doing? Thanks. NM, I see the file contents. Someone should give this a shot. Wouldn't surprise me if it works.

---------- Post added at 03:46 PM ---------- Previous post was at 03:36 PM ----------

@HomerSp Did you have to do anything specific to the MBN file you took from the Mi 9T? If not, you might have just come up with a generalized way of enabling IMS features for a lot of other phones with QPST access!

You try this to see if B71 is enabled on TMO?
https://forum.xda-developers.com/showpost.php?p=81359635&postcount=130

 

[HomerSp]

My phone is being repaired, will have it back next week. What actually is this doing? Thanks.

Hah, I actually meant to quote @suzook since he was the one who asked. Which bands are enabled are stored in /nv/item_files/modem/mmode/lte_bandpref and /nv/item_files/modem/mmode/lte_bandpref_extn_65_256. The json simply modifies those to enable the same bands as the international version.

 

[kb_79]

Hi @HomerSp thx for this thread, it's possible to have profil mvn france-commercial-orange.mbn ?
Thx

 

[dennis96411]

My phone is being repaired, will have it back next week. What actually is this doing? Thanks. NM, I see the file contents. Someone should give this a shot. Wouldn't surprise me if it works.

---------- Post added at 03:46 PM ---------- Previous post was at 03:36 PM ----------



You try this to see if B71 is enabled on TMO?
https://forum.xda-developers.com/showpost.php?p=81359635&postcount=130

How would I know whether it worked?

 

[xbamaris1`]

How would I know whether it worked?

There are band checking tools on the Play Store. Try Network Signal Guru and see.

 

[dennis96411]

There are band checking tools on the Play Store. Try Network Signal Guru and see.

I think I only see bands 2 and 4 around here. I've definitely seen band 12, but not 66. Band 71 still seems like a niche band so it'll be hard for me to tell.

 

[xbamaris1`]

I think I only see bands 2 and 4 around here. I've definitely seen band 12, but not 66. Band 71 still seems like a niche band so it'll be hard for me to tell.

Network Signal Guru will have an option to turn off / on bands. It will give you an idea if the bands are at least detected by the system.

 

[dennis96411]

Network Signal Guru will have an option to turn off / on bands. It will give you an idea if the bands are at least detected by the system.

That app just shows a blank screen with an ad on top, sadly.

 

[sesz]

Network Signal Guru will have an option to turn off / on bands. It will give you an idea if the bands are at least detected by the system.

These are the LTE bands visable by signal guru for TMobile. 512G Global rog2 with volte enabled

 

[VZTech]

These are the LTE bands visable by signal guru for TMobile. 512G Global rog2 with volte enabled

Did you try the file Homer provided to possibly enable band 66 and 71?