yashsingh1/xdaforums huggingface dataset:
[ASUS ROG Phone II Guides, News, & Discussion] panoramixmeister:
I am a OnePlus 5T user. After upgrading to Android 10 we can no longer use the PDC solution to activate VoLTE/WoWiFi on our phones because PDC doesn't recognise the phone.

I followed all the instructions successfully.

Because I live in Greece, OP's India Vodafone and Telefonica UK MBNs work in my case. I just found these MBNs in my phone's root directory and copied them in the EFS app folder. When I used the ones from Mi 9T it didn't work.

One small thing I noticed though, when I entered the command "EfsTools.exe uploadDirectory -i mcfg_sw.mbn -o / -v" at some point I saw this error message in the cmd "Error on upload file '/ims/imshandoverconfig'. EFS error. Code = 26"

When I did the same for sim 2 no errors whatsoever.

VoLTE works fine for both sims but VoWiFi doesn't work, although in the call preferences I have it activated and as the preferred option. Any ideas?

Many Thanks
[ASUS ROG Phone II Guides, News, & Discussion] Joolz78:
This method is what I've been searching for. I can confirm I have used this method on a Oneplus 6 and now have working VoLTE and VoWIFI on the Boost Mobile network (Telstra) here in Australia.
[ASUS ROG Phone II Guides, News, & Discussion] happiboi:
Hey Kevin, did you ever manage to sort out this error? I'm having the same issues too. SIM1 worked well but doing it for SIM2 using the -s switch/option throws an error?
[ASUS ROG Phone II Guides, News, & Discussion] KevinAce:
Unfortunately no. I never figured out the 2nd SIM. There are some pretty smart folks on here who likely can help. I never needed the 2nd SIM so it was ok for me.
[ASUS ROG Phone II Guides, News, & Discussion] happiboi:
Thanks Kevin.

[Mention]@everyone[/MENTION] else reading this - did anyone else encounter the same error when trying to perform this for the 2nd SIM? Any other options to get around the '-s option' issue?
[ASUS ROG Phone II Guides, News, & Discussion] The_Walking_Playground:
Hi,

I didn't have this issue. The commands work fine for me. Are you sure you're using the latest version of EfsTools from the OP? Maybe you should try downloading them again to confirm.

TWP
[ASUS ROG Phone II Guides, News, & Discussion] ehsan96696:
Settings Changed

Hi All,

So while I was out and about today, my phone glitched for a second and now refuses to connect to make any phone calls and the voLTE/voWIFI symbol is gone. I tried restarting it with no success, uninstalling/reinstalling the voLTE App, and tried to re-connect it to QPST but neither remote or the usb method allowed me to enter DIAG mode. I am stuck as to what I should do now. Any help?
[ASUS ROG Phone II Guides, News, & Discussion] happiboi:
Hey TWP,

Sorry i should clarify, i am using v1.1 of ESFtools (which i now realise does not have the -s option added yet).

When I try to use the latest version (v1.2) - i kept getting an error when i try to run commands: "Critical error: Bad Command", so i reverted to try using v1.1 which did everything just fine but only for SIM slot 1
[ASUS ROG Phone II Guides, News, & Discussion] Dolpech:
Hello,

I am in the same situation today.

I also saw the same error with the command line via efstool: Error on upload file '/ ims / imshandoverconfig'. EFS error. Code = 26 "

How did you find the MBN files on your phone?

in which directory are they?

How did you extract them?

Is your phone routed?

Thanks
[ASUS ROG Phone II Guides, News, & Discussion] meralux:
Having multiple issues getting this to work. I need to get it enabled because I'm missing calls and having text issues from people that are on LTE sending me stuff. Texts get delayed by hours or never come sometimes, and phone calls will go straight to voicemail or even not show that they came in. I'm almost positive not having VolTE is the issue and I was hoping to get this working and hope it fixed it (otherwise I'd need to sell this phone).

Should mention that I am on t-mobile.

So I rooted with twrp and magisk and can confirm my phone is rooted. Followed the directions to enable Diag. When I press stuff in the AsusVoLTE menu it did ask for superuser and I granted it, but whenever I tap on anything it just says superuser access granted and theres no feedback that anything worked.

The QPST says my device is connected but it's a different device then the Diag tutorial stated so I'm very confused. I have a tencent version of the phone I got off ebay. If I try to enable VoLTE through the app or through the phone dialer it seems like neither works. It still says I'm on 4G in my mobile data and the EFS tools errors out, I also can't push commands through adb.

Any help would be greatly appreciated!

I have screenshots of my stuff but this forum isn't letting me attach them so I'll DM them to you (assuming it lets me do that) or you can hit me up on discord if you think you can help me, Meralux#6321

I'll legit paypal/venmo anyone that can help me fix this I'm really desperate cause I don't wanna sell this phone but it's basically unusable if I have to worry about not getting calls/texts.
[ASUS ROG Phone II Guides, News, & Discussion] Cammarratta:
Run the app and click enable from the app, run the eft tools commands on the first page, reboot and it should work for you
[ASUS ROG Phone II Guides, News, & Discussion] meralux:
Trust me I tried to do that, it does not work. I'll try and like insert the picture links so you can see, you'll have to remove the extra stuff I put in cause this forum is weird about pictures.

https: ## //i.imgur ## .com ## /3m6tbbw.png

https: ## //i.imgur ## .com ## /XzGzlA9.png

https: ## //i.imgur ## .com ## /AZ0zjgS.png

https: ## //i.imgur ## .com ## /WrTRm9b.png
[ASUS ROG Phone II Guides, News, & Discussion] shunno:
I was able to get it work. Now have working VOWIFI. Thank you OP HomerSp! May you live long and prosper!
[ASUS ROG Phone II Guides, News, & Discussion] airjoe:
My service provider does not have VoLTE available, can I still work with VoWiFi in order to improve voice quality? And also how do I notify VoWiFi is working during a call? Any symbol on the status bar while calling? Thanks!
[ASUS ROG Phone II Guides, News, & Discussion] reg66:
Not entirely sure its correct icon you're looking for, but this what I get with WiFi on
[ASUS ROG Phone II Guides, News, & Discussion] reg66:
Deleted
[ASUS ROG Phone II Guides, News, & Discussion] airjoe:
Would you please show me which icon is it? Thanks!
[ASUS ROG Phone II Guides, News, & Discussion] reg66:
Sorry dude, not sure why my screenshots aren't uploading. I deleted the screenshot from my device and now it's only showing VoLTE! (WiFi icon isn't always present). When it changes I'll post again lol
[ASUS ROG Phone II Guides, News, & Discussion] airjoe:
Just take your time man. Just also want to know Wi-Fi calling icon will be present on status bar even you are not on the call, right?
[ASUS ROG Phone II Guides, News, & Discussion] reg66:
Yeah it's still present, but not sure why sometimes it shows and other times it doesn't - when I'm always at home connected to WiFi. (still not showing!)
[ASUS ROG Phone II Guides, News, & Discussion] March3lo:
Friends, carry out all the steps, without errors, but I do not have the icon does not appear above, when reviewing the IMS information It appears as not registered, but I have everything enabled Volte and Wifi calls, does anyone have the Wom mbn from Chile? or do you know which one could work? or what is my mistake in all this?
[ASUS ROG Phone II Guides, News, & Discussion] rajnarasimhan:
WiGig is not connecting

Team,

I was able to successfully enable VoLTE by following the steps. After enabling the process, my wiGig connection got interrupted. Earlier i used to have two wifi networks one with 5 Ghz and another with 60Ghz. I have a supporting AD router(Nighthawk X10).

Any help?
[ASUS ROG Phone II Guides, News, & Discussion] March3lo:
friends, I answer myself, I found the error, in my case at least step 1 in the asusvolte apk in addition to pressing the "Enable Volte" and "Enable Diag" button also press the "Enable PDC" button and there after a reboot (and clearly the rest of the guide) voLTE calls worked (that was my main goal) now I can make and receive calls in 4G and see icon of volte in the top. These happy :D in my area when playing call of duty the connection went down to "H +" and it was unstable so I enabled only 4G but the calls did not come in and that's why I got to this guide.

Thanks Homer for your guide, as a suggestion perhaps you should specify that you must also enable PDC in case someone else happens the same as me. Regards.
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
Will this work 100 percent on Tmobile ?
[ASUS ROG Phone II Guides, News, & Discussion] rajnarasimhan:
Yes, it works for Tmobile

Yes, it works for Tmobile
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
[MENTION=2977593]rajnarasimhan[/MENTION] Have u tried it urself ? If so can u give me hand with this ?
[ASUS ROG Phone II Guides, News, & Discussion] rajnarasimhan:
You got to follow the steps and it worked like a charm.
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
Ok I'll give it shot tonight I need to root tho ?
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
If anyone can help me remotely would be greatly appreciated inwouod pay for their time
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
Even tho im ordering the Asus rog phone 3 16gb of ram usa version as soon as it releases i love this ultimate edition Rog Phone 2 ill pay $100.00 to whoever helps me with this on team viewer...Pm me if ur interested.... Thanks in advance
[ASUS ROG Phone II Guides, News, & Discussion] xXSnowyXx:
Been waiting forever for a solution like this...though I hate to see so much success and then have it not working for me. Followed each step with no issue, can toggle VoLTE and VoWiFi but never get VoLTE icon and still drops 4g to make calls. Calls won't go through over only WiFi or with LTE only selected. Not sure how to diagnose furthur. OnePlus 5 running 9.0 firmwar/ MSM Xtended rom using Telstra mbn from Mi 9T.
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
Are u on TMobile? What version of the rog phone are u using I have the American ultimate edition and I love this phone picking up the note 20 ultra and want to get this working on this one so then I can pick up the ultimate edition of the rog 3 but either way I'm buying it no matter what .....just would love to use it on weekends not just to collect it
[ASUS ROG Phone II Guides, News, & Discussion] KickerTom:
I had limited success with this guide (got options in menu, but they didn't do anything, like for you). Then, inspired by other guides, used PDC to deactivate current profile and activating other, with volte and vowifi, and everything works now.

Look e.g. here https://xdaforums.com/xiaomi-mi-mix-2s/how-to/guide-activate-vowifi-volte-t4031417
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
Can u give me a hand with this ? I'll pay for it time spent
[ASUS ROG Phone II Guides, News, & Discussion] MelquiXDA:
Someone can create an app which run the Code:

*#*#3642623344#*#* at Android startup? Like "Enable VoLTE" with option to hide icon...
[ASUS ROG Phone II Guides, News, & Discussion] Redhawk2000:
I believe Tasker can do that with the proper setup.
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
Let's do it I'll pay for it

---------- Post added at 06:41 PM ---------- Previous post was at 06:39 PM ----------

Get in contact with him.
[ASUS ROG Phone II Guides, News, & Discussion] Redhawk2000:
There is nobody to contact, it is a matter of using the app "Tasker" and setting it up to do so. I don't need that function, I was just pointing out it could likely do so. Feel free to research how to do so.
[ASUS ROG Phone II Guides, News, & Discussion] xXSnowyXx:
I can get PDC to connect but I don't see Telstra in the list to activate unless it's under something else. Tried loading the mbn through PDC but still can't see it :confused:
[ASUS ROG Phone II Guides, News, & Discussion] KickerTom:
Pick any, if it doesn't work, repeat with some other. I was lucky on first try. Some support volte only, some also vowifi.

I believe you can upload you own mbn, but you would probably need to delete some other first to make space, but I haven't tried.
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
Ok guess it's not true on TMobile i offer $100.00 to who helps me do this correctly and no one stepped up .....I'll be getting the note 20 ultra soon and the rog phone 3 just really wanted to try it on this one but I guess I tried ......
[ASUS ROG Phone II Guides, News, & Discussion] xXSnowyXx:
Tried SetSelectedConfig->Sub0 on some profiles but they only go to pending. Tried deactivating the current profile (Overseas-Commercial_DS) first but no different. Goes back to Overseas-Commercial_DS being active after reboot. Not sure how to get another profile to activate to see if it works :/

Also tried deleting one to add the Telstra one from Mi 9. Got rid of VoLLTE_ATT no problem but still can't add another in.
[ASUS ROG Phone II Guides, News, & Discussion] KickerTom:
I haven't tried adding new, so can't help there. Regarding activation, you deactivate current profile, then activate the one you want. When it's in pending state, press activate button to really confirm that. It should show active. For me, it survives reboot (will see about firmware upgrade).

---------- Post added at 09:20 AM ---------- Previous post was at 09:15 AM ----------

XDA is not customer service center, this is a place to get knowledge and then help yourself.

Have you tried the PDC method? What have you tried and what was the outcome?
[ASUS ROG Phone II Guides, News, & Discussion] Menergy:
Can I ask how battery life on the ROG 2 compares with VoLTE and VoWiFi enabled 24/7? Any difference with stock Android 10 and no VoLTE and VoWiFi?

On the last 2007-official ROM update its description alluded to enabling VoLTE (do not remember about VoWiFi) on most Scandinavian mobile carriers (for example Sweden, Norway and I think Denmark). I am in the UK but have not seen any changes in the phone Settings after the update. As the ROM is the same, wouldn't these at least be enabled for all, even if gray (not tappable) in the respective region?

And last. Apparently the VoLTE/VoWiFi mod survives reboot and OS upgrade. Does however this, since flashing modems for other brands (i.e. Xiaomi on the ROG), affect phone's ability to use the default frequencies or reduces its capabilities in any way?

I am seriously considering going for the VoLTE/VoWiFi functionality but am a little scared about serious and irreversible consequences if something goes wrong.
[ASUS ROG Phone II Guides, News, & Discussion] xXSnowyXx:
Ah seems obvious in hindsight. Tried every profile in the list - they are definitely activating since I get no signal on most of the profiles - but no VoLTE on any. Saw someone have success with the 5t in another thread but they managed to get the Telstra profile added. They're on Stock OOS which may have something to do with it. Using either PDC or EFS doesn't add the profile so it can't be activated :/

edit: Seems I spoke too soon. At some point something I did got it to finally kick in. I'd given up for the day and havn't looked at my phone for a bit but then I check it and suddenly theres a VoLTE icon in the top row and I can call without dropping to 3G! Even VoWiFi works! Might have something to do with the extra APN settings or using the Nokia mbn mentioned in this post: https://xdaforums.com/oneplus-5t/ho...n-carriers-t3817542/post82823331#post82823331

According to the PDC tool the Carrier Overseas profile is still the one that's activated ? no idea what eventually tripped the change so hopefully it stays and I don't have to try litterally everything again
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
Haven't messed with anything just yet just reading here and people say they did it on TMobile and I was just asking for help I would pay that person for his time that's all no harm intended .....I really like this phone even after I buy the note 20 and the new rog phone 3 I still would like this one to have volte enable as a back up.......
[ASUS ROG Phone II Guides, News, & Discussion] rajnarasimhan:
Yes, you need to root your phone first. I installed the asusVolte apk and enabled VoLTE and enableDIag. Once done, then i ran the scripts in fastboot mode.
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
I'll connect the phone to my PC u connect with tram viewer and u run the codes for me and I'll pay u if ur sure it works
[ASUS ROG Phone II Guides, News, & Discussion] jimeidopf:
I didn't get any errors, I'm seeing that Enhanced 4G LTE Mode is available in settings, I see LTE provisioned is on in phone information (*#*#4636#*#*), but IMS information shows VoLTE as unavailable.
[ASUS ROG Phone II Guides, News, & Discussion] TuGa121:
All good now pre ordering the big boy note 20 ultra 5g and getting th 16gb ram rog phone 3 when pre order is Available for USA don't matter anymore
[ASUS ROG Phone II Guides, News, & Discussion] ALE_Spring:
I'm tinkering with my Zenfone 5z on this process. Everything goes smoothly until the last step. I type EfsTools.exe uploadDirectory -i mcfg_sw.mbn -o / -v, hit enter, and things start scrolling and I feel like something big and important is happening. I feel hope for my phone, the music swells, and then...

...this. The error line is a bright and taunting red.

I can't find anyone else in this thread having this issue, so I figured I'd ask. This phone came to me from T-Mobile (I acquired it second=hand) and I'm using Ting as my carrier. Does this change which mbn file I should be using? I just used the one from North America and T-Mobile.
[ASUS ROG Phone II Guides, News, & Discussion] bobs50000:
So I'm thinking about getting the Zenfone 6, but no VoLTE bothers me. I saw others got this to work on the Zenfone 6, so I think I'm going to go ahead and try this out once I get it. I also wanted to be rooted with Magisk and use TWRP/LineageOS. So if I install those three things before doing these steps, will it still work?

Also, would wiping my phone after I do these steps require me to do them again? Like, after I get the whole phone set up like I want, If I do one last wipe, would these modifications be lost?
[ASUS ROG Phone II Guides, News, & Discussion] ALE_Spring:
By my understanding, Lineage has VoLTE built in? I was considering going that route myself but am having trouble getting it to install TWRP (probably something I'm failing to see is happening wrong, but not sure).
[ASUS ROG Phone II Guides, News, & Discussion] bobs50000:
Built in?

I've read that people have been having issues with VoLTE for any model phone with LineageOS. Possibly because of some sort of proprietary functionality that can't be replicated in LineageOS. I know in order for a LineageOS build to be listed as an official build, it needs to support most of everything the base ROM supports, but the Zenfone 6, at least in the US, supposedly doesn't support VoLTE; the update was never released in the US. So that's why this thread exists, so that we can apply the update ourselves to the phones that support it to get VoLTE working.

If you can find an instance of somebody just installing LineageOS and getting VoLTE working on a phone that didn't have it before, I'd be really grateful and interested to read it, but I don't think LineageOS can do that.

My question still stands, can I install TWRP, LOS, and Magisk and then do these steps, and will it work? Has anyone done that?

Thank you
[ASUS ROG Phone II Guides, News, & Discussion] ALE_Spring:
Gotcha. I don't remember where it was that I had read that Lineage kicked off and running with VoLTE. I'll have to see if I can find it and post it. It's entirely possible I'm mistaken- it's been a very long last few months.
[ASUS ROG Phone II Guides, News, & Discussion] bobs50000:
Hey, just trying to understand the process a little better...

What is an mbn and why are we using ones specifically from a Xiaomi phone?

Also, what is the purpose of steps 3 and 4?

Just trying to learn more about what I'm actually doing.
[ASUS ROG Phone II Guides, News, & Discussion] NazoKikai:
Is there a way to relock the bootloader after getting VoLTE working? I don't need root for anything and the bootup screen saying my bootloader is unlocked is not pretty.
[ASUS ROG Phone II Guides, News, & Discussion] astracd:
Could you please extract mcfg_sw/generic/Pixel/NA/Freedom/pixel_VoLTE/mcfg_sw.mbn

I searched all around could not find one

Thank you!
[ASUS ROG Phone II Guides, News, & Discussion] The_Walking_Playground:
Hi,

Why don't you just extract the image as I described? I have since deleted that data, so I would have to extract it again.

TWP
[ASUS ROG Phone II Guides, News, & Discussion] astracd:
Where did you found latest pixel 4 file?
[ASUS ROG Phone II Guides, News, & Discussion] The_Walking_Playground:
Hi,

Google uploads factory images for all of their devices. Just search.

TWP
[ASUS ROG Phone II Guides, News, & Discussion] dennis96411:
I recently switched from T-Mobile to AT&T. Just to confirm, there is currently no way to enable VoWiFi for AT&T? VoLTE works fine.
[ASUS ROG Phone II Guides, News, & Discussion] sjamie:
I can't get VoLTE nor VoWiFi working on my OnePlus 5 with AT&T. How do you know VoLTE is working?
[ASUS ROG Phone II Guides, News, & Discussion] dennis96411:
I'm on AT&T's network right now and I have VoLTE.
[ASUS ROG Phone II Guides, News, & Discussion] sjamie:
Did you get your phone from AT&T or did you bring the device to AT&T (BYOD)?
[ASUS ROG Phone II Guides, News, & Discussion] dennis96411:
BYOD
[ASUS ROG Phone II Guides, News, & Discussion] sjamie:
How did you get VoLTE to work?
[ASUS ROG Phone II Guides, News, & Discussion] yok3:
I am curious as well.

Did you follow the guide on page 1? Any specific instructions for AT&T?
[ASUS ROG Phone II Guides, News, & Discussion] dennis96411:
It actually worked straight off the bat from when I enabled VoLTE for T-Mobile. You can following the guide using the T-Mobile mcfg_sw.mbn.
[ASUS ROG Phone II Guides, News, & Discussion] sedp23:
For those that got this working has this improved receiving calls and texts? Before volte was enabled alot of times the phone misses calls and texts where the phone doesn't ring. Is this still a issue after volte is enabled ?
[ASUS ROG Phone II Guides, News, & Discussion] ALE_Spring:
Did you ever figure out what was going on with the error code 26? I had this same problem (and didn't see that you had as well when I initially posted about it). Any chance you found a fix?

Thanks.
[ASUS ROG Phone II Guides, News, & Discussion] tiarap00:
Hey, just a curiosity, do you see the profile you added under PDC Tool?

Knowing that would be so helpful to get mine working. Thank you.
[ASUS ROG Phone II Guides, News, & Discussion] Kalanyr:
[MENTION=2266182]HomerSp[/MENTION]

As a headsup, commit af694086fdbb1b8e39b53114f50a6067f7ea63c5 breaks compatibility with (at least the) One Plus One 8 Pro (it would result in all commands giving Critical error: Bad Command after detecting the correct port). I reverted the commit locally, recompiled, adjusted the config file to be appropriate for the 8 Pro ( <efstool port="Auto" remote="false" baudrate="38400" password="FFFFFFFFFFFFFFFF" spc="000000"/>

) and confirmed that at least efsInfo works after this change is made.

(It would be handy to fix this, as your version of efsTools is the best way to enable VoLTE and VoWifi in unsupported regions and 1.1 works but can't write to SIM Slot 2 and 1.2 can write to SIM Slot 2 but doesn't work)
[ASUS ROG Phone II Guides, News, & Discussion] happiboi:
Hi Kalanyr,

Would you be able to share your version ? would love to get my sim slot 2 working as well on my OP8 Pro :fingers-crossed:
[ASUS ROG Phone II Guides, News, & Discussion] happiboi:
Hi Again - not sure how Android 11 is impacting this but since updating to Android 11 - I can no longer get the tool to function/recognise port?

All things static, the only change has been an update to Android 11 and now whenever I try esfinfo - i just get error:

Use serial port 'COM6' <--- (or whatever com port is selected)

Critical error. Bad command?