yashsingh1/xdaforums huggingface dataset:
[Sony Xperia XZ1  Questions & Answers] Sliftw:
So i just got my XZ1 G8342 and can confirm that VoLTE and VoWiFi works perfectly.

I used firmware "G8342 47.1.A.12.75 CIS RU-UA-KZ-BY 1310-4349 R10B" and replaced the oem_X-FLASH-ALL-C93B.sin file with the one from "G8441_Customized US_1310-4371_47.1.A.12.75_R8B". Then i just flashed it with Newsflasher. When i installed the T-Mobile SIM card the phone said it was optimizing settings for my SIM card and restarted, then VoLTE / VoWiFI was working perfectly. My XZ1 G8342 is not rooted.

Im super happy this works though. Now im going to try manually copying the files to my rooted XZ F8332 and see if it will work also.
[Sony Xperia XZ1  Questions & Answers] krchi:
Amazing! It would be better if you attached a screenshot where you have LTE discovery open while you are in a phone call.

---------- Post added at 09:00 PM ---------- Previous post was at 08:54 PM ----------

Sorry to bother you, but if I do flash the G8342 files onto my G8341 what are some potential ways that it might break my phone?

EDIT: Curiosity got the best of me and I flashed the USA G8342 XZ1 firmware onto my G8341 and VoLTE and wifi calling works! My phone now shows it's the G8342 model along with dual sim settings but none of it works and I have noticed any bugs so far.
[Sony Xperia XZ1  Questions & Answers] krchi:
I was able to get VoLTE and wifi calling to work on the G8341. I have cross flashed the dual sim XZ1 G8342 firmware onto my single sim XZ1 G8341 with no noticed side effects or performance issues, YMMV. An outline of what I did is as following:

What I needed: I downloaded the latest US firmware for the G8342, another regions G8342 firmware so that I could retain fingerprint sensor, and US XZ1c's firmware to get VoLTE to show in settings.

What files I flashed: oem_X-FLASH-CUST-C93B.sin from the XZ1c to enable VoLTE option in settings, system_X-FLASH-ALL-C93B.sin and vendor_X-FLASH-ALL-C93B.sin from a region other than US to retain fingerprint sensor.

Optional: You can omit userdata_X-FLASH-CUST-C93B.sin if you want to keep userdata. PLEASE backup before you flash I do not want you to lose any data, I did not lose any data in my case and as always remove all .ta files before you flash to be better safe than sorry.

Advice: Not sure what role this plays but for all the firmwares you are cross flashing from, try to keep the files you are flashing on the same firmware version to ensure compatibility, in my case the XZ1c firmware was on the Feb security update while the two G8342 firmware were on March security update. It still worked for me and in settings it shows March.

You only need to flash the full US G8342 firmware if you are coming from an G8341, other wise just flash oem_X-FLASH-CUST-C93B.sin to enable VoLTE option in setting and system_X-FLASH-ALL-C93B.sin and vendor_X-FLASH-ALL-C93B.sin to enable fingerprint sensor.
[Sony Xperia XZ1  Questions & Answers] sethstorm:
Another G8342 success story here.

What I did:

Grabbed XZ1c (Customized US) firmware for VoLTE

Grabbed XZ1 (Non-US) firmware for fingerprint enable

Made clean backup of downloaded XZ1 US firmware

Replaced the following in my US firmware:

oem_X-FLASH-ALL-C93B.sin with matching version from Customized US XZ1c

system_X-FLASH-ALL-C93B.sin with matching version from non-US XZ1

vendor_X-FLASH-ALL-C93B.sin with matching version from non-US XZ1

Then flashed that with newflasher, leaving all but simlock.ta in. Works great.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
That's awesome Seth!

I just wish it wasn't so much work just to get the phone to have T-Mo VoLTE.
[Sony Xperia XZ1  Questions & Answers] sethstorm:
I'm just happy that the platforms (XZ1/XZ1c/duals) are that interchangeable.

The instructions should work for the next update - but I'd wait for all the pieces to be on April patch before reflashing.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Yeah that is cool. As much as I loved the XZ Premium when I saw it at my local Best Buy, I just don't have the patience for this kind of thing anymore. I unlocked the bootloader, rooted, and did the S-Off thing on my old HTC One M8 4 years ago in order to get an upgrade in musical quality. It was a cool adventure, but I'd never do it again. And therein lies the problem...........I love Sony phones, but I hate rooting, etc. lol And since Sony refuses to sell these phones T-Mo VoLTE-certified, then I have no choice but to continue buying OTHER phones. Currently, I own the T-Mo LG V30.

HOPEFULLY the XZ2 Pro will be T-Mo VoLTE-certified, cuz if it is, I will very likely get it. It should come out soon, latest this fall, but I hope not! lol
[Sony Xperia XZ1  Questions & Answers] sethstorm:
I recall there being a root-required equivalent for the XZ Premium. Forget where in their forums, but someone said that they had it working.
[Sony Xperia XZ1  Questions & Answers] pbarrette:
Yes. It's here:

https://xdaforums.com/xz-premium/help/volte-t-mobile-enabled-t3627567/post74473138#post74473138

And currently requires a factory reset after flashing to work as described here.

Probably because of the contents of the

/oem/system-properties/cust.prop

file as described in the post immediately following.

RockStar2005 should already know all of this, since he's been following and commenting in that thread as well. But still none of it seems to get through to him.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Yeah. I am VERY aware of that too. That's what I was referring to when I said "As much as I loved the XZ Premium when I saw it at my local Best Buy, I just don't have the patience for this kind of thing anymore". lol

If Sony Mobile wasn't so infinitely stupid, they would've certified VoLTE on the XZ Premium (which was the TRUE flagship of 2017, not the XZ1), and I would've bought it. So what do they do instead? They certify T-Mo VoLTE on the XZ1 COMPACT (not XZ1). I'm sorry, but anyone who thinks that's a good idea to ONLY give a "barely flagship" phone that option is a f'ing idiot IMO. lol And then what idiotic thing did they do in 2018? They certify VoLTE for the XZ2 COMPACT (not XZ2) with VERIZON and only Verizon. They didn't even offer it for T-Mo. They could be rulers here in the U.S., but instead they act like giant wussies. I would buy the upcoming XZ2 Pro in a heartbeat, but if they don't give it T-Mo VoLTE-certification, then they can rot in hell. lol
[Sony Xperia XZ1  Questions & Answers] New Optimus:
by any chance does anyone have the xz1 compacts oem_X-FLASH-ALL-C93B.sin from the US version ending in .75? new version is .119 and it is different, I tried it anyway with the .119 CE but no VoLTE
[Sony Xperia XZ1  Questions & Answers] pereimer:
Pulse O2 & S Health

There is one problem that I just discovered with flashing the GB version onto your phone. For some reason, Samsung Health disables some features including the blood O2 level sensing if it detects the GB version of the firmware. Apparently, there are different lists of features that Samsung Health allows in different countries. Just wanted to let people know that if they are going to go this route to get the fingerprint reader working, Samsung Health will loose some functionality.
[Sony Xperia XZ1  Questions & Answers] krchi:
You can use the older firmware oem sin file from XZ1c, thats what I did for my XZ1 and it worked
[Sony Xperia XZ1  Questions & Answers] New Optimus:
where did you get the older firmware? I have looked and xperifirm only gives me .119 as an option and no where else seems to have it
[Sony Xperia XZ1  Questions & Answers] krchi:
Referring to your original post, you can use the oem sin file from the .75 xz1c firmware on your .119 xz1 device
[Sony Xperia XZ1  Questions & Answers] New Optimus:
I don't have the x75 xz1c firmware, that is what I was looking for.
[Sony Xperia XZ1  Questions & Answers] New Optimus:
I found that using the available usa version with the available .145 firmware does work, however since i am on Metropcs I had to put in a straight talk t mobile sim to see it.

Now to figure out how to get the metropcs sim to work with volte
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Oh, I thought you had T-Mobile. My bad. lol

Not sure if that firmware works on other networks. I thought it was just for T-Mobile customers.
[Sony Xperia XZ1  Questions & Answers] New Optimus:
from what I have found using 3 different t mobile mvno's ( straight talk, tracphone, and walmart family) volte works out of the box, but metropcs does not.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
MVNO?? What is that?

Wait, who is your carrier? I'm confused. lol
[Sony Xperia XZ1  Questions & Answers] New Optimus:
MVNO (Mobile Virtual Network Operator) These are the reseller of T mobile networks. Such as Straight talk, tracphone etc. my phone service is MetroPCS they are owned by T mobile, since 2013. What this means is they operate like a MVNO yet they are still t mobile. similar to the prepaid t mobile division.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Oh I C. Is access (or reception) to the T-Mo network as good through a MVNO as it is for direct T-Mo customers?

What is the difference b/t just being a prepaid T-Mo customer vs. an MVNO customer?
[Sony Xperia XZ1  Questions & Answers] New Optimus:
yes its really just like being a t mobile prepaid customer
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
I C. Ok!

Yeah normally VoLTE would work, but the people who run Sony Mobile aren't normal. There sac-less idiots. lol They could be KINGS here, but instead most ppl in the U.S. aren't even aware that Sony makes phones. It shouldn't be like that, but it is. Regardless, none of it is an excuse to disallow VoLTE for their U.S. customers, esp when HTC, OnePlus, and Huawei are allowing it on their unlocked phones. NO EXCUSE! lol
[Sony Xperia XZ1  Questions & Answers] New Optimus:
I agree, and this bullcrap about unlocking the bootloader is stupid, I get they don't want to be responsible for you bricking your phone but what about if you want to sell it you relock but they don't let you.

The xz1 and even more so the xz2 have premium specs all things considered and they are one of the few IP68 water resistant phones. I can drop my phone to the bottom of the swimming pool.... shallow end and it keeps on ticking perfectly well. in fact I have taken several underwater pictures and a couple of video's I wanted to take some underwater video down in key west when I was there last month but it was still too cool to enjoy the water.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Yeah. HTC is VERY open and even supportive of ppl unlocking the boatloader on their phones. Not Sony. I remember a few years ago ppl were saying if you did that, the camera would all f'd up and all your pics would come out, out of focus, and there was no fix for it.

That's awesome. Sony Mobile started putting warning labels on their site about that whole water thing. Used to be they would say "go for it!". Now they're all "the phone is ok to be splashed but not really recommended for underwater" EVEN THOUGH they're rated IP68. LOL They're just trying to cover their a$$ cuz some losers went underwater and prob did some crazy sh*t or whatever and f'd up their phones and tried to blame Sony for it. I love that you went underwater several times and still had no problems! :good::cool:

Well within the next month or so the XZ2 Premium will be showing up on the U.S. Sony Mobile site (it's already posted on the global site). And when it does, I'll know from looking at the Specs---->Connectivity section whether or not T-Mo VoLTE will be included. I'm not holding my breath though. lol
[Sony Xperia XZ1  Questions & Answers] New Optimus:
Yes the sony camera thing is real, if you unlock the bootloader the camera doesn't work anymore unless you use the "drm" fix which has been out for a while now. Yeah I would always be careful about what you do underwater IP68 should be safe in water about 3 feet deep for 30 mins, or is it 5 feet for an hour.. hmm one of those anyway. I wouldn't try my luck with that I just dip it a few inches like this. [YOUTUBE]mSDFBl3PoQ0[/YOUTUBE]

The last time I owned a HTC was the original EVO, which I used on Metropcs after "modifying it lol" they are good phones but I was looking into getting the U11 until I found that even a quick dip in water could cause it to fail.

yes both the xz2 and the xz2 premium look good, though the premium is so much more even. I would love it if they were able to be used with volte, but I think I will be skipping them, and all future sonys because of the bootloader and drm issues as I hate all the bloatware that so many are putting in, such as this xz1 preinstalled facebook and amazon kindle/shopping, and youtube and many others. Its not that I don't want or use those apps but since they are system apps they run all the fn time I log out I want it OFF. lol
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Oh they have a fix for it? Nice! IP 65/68 (Sony's rating) is "dustproof and can be submerged up to 1.5 meters/5' deep for 30 mins tops."

Oh ok. Well still, it's underwater. Cool!

The U11 has been proven to fail after just a quick dip??? That sux!! Haha nice on EVO. The ONE & ONLY time I ever modified a phone was my old One M8, which I unlocked the boatloader, rooted, AND achieved "S-Off" in order to get the Harman/Kardon mod I found on here to work to upgrade the sound. At first I liked the whole rooting thing cuz of the freedom that came with it, but after a while having to do everything manually became too much work. That is why I refuse to ever do it again, EVEN for a phone I love like the XZ Premium and upcoming XZ2 Premium (IF it doesn't get T-Mo VoLTE).

Well you can still disable those apps. One of the first things I do with any new phone is disable or uninstall the unwanted apps like FB. So I wouldn't worry about that. The VoLTE thing should be a much bigger deal. lol
[Sony Xperia XZ1  Questions & Answers] Uxorious:
So I got G8342 working with VoLTE and fingerprint by mixing 3 firmwares as described earlier.

I noticed Google thought it's an XZ1c in it's initial "You have a new device" mails, but everything else shows right.

1 issue though: Smart Lock.

If I go into the Smart Lock settings there are no options available.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
That's cool! Glad u got it working.

Just ridiculous that Sony Mobile makes us do this crap when HTC and OnePlus don't.
[Sony Xperia XZ1  Questions & Answers] Uxorious:
Well, at least it was super easy to do.

But honestly, I think the bigger question is "Why can T-Mobile (and others I'm sure) prevent VoLTE without partnerships"?

Isn't it part of the LTE standard and should just work across the board?
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Doesn't sound easy. lol I did similar rooting stuff to my old HTC One M8 and it was a hassle. (I currently have the locked LG V30 via T-Mobile.) I'd own the XZ Premium if it had VoLTE on T-Mo.

I wouldn't call it partnerships. On my advice my dad bought the unlocked OnePlus 5 last year b/c I found out it had T-Mo VoLTE on it. My HTC 10 from last year was the same...........unlocked, but had T-Mo VoLTE. I was under the impression that was b/c those companies certified VoLTE with T-Mo, but one guy on here said Sony purposely blocked VoLTE on the American phones. I dunno about all that. T-Mo requires VoLTE certification to ensure the phones work on their network. Now why doesn't AT&T & Verizon do that?? I dunno. Maybe they do too? Not sure. But yeah, OnePlus doesn't have a partnership with T-Mo NOR does T-Mo sell their phones directly, yet it still has it. AKA, NO EXCUSE for you Sony Mobile! lol

It SHOULD work across the board my friend. It SHOULD! But it doesn't. Only exception as u know was the XZ1 Compact, which is like the LEAST FLAGSHIPPIEST phone Sony released year (aside from the XZ Compact). So why did Sony Mobile choose THAT phone and not the XZ Premium? Can you say "crack heads?!" lol
[Sony Xperia XZ1  Questions & Answers] New Optimus:
There is no need to root or unlock the bootloader to change the firmware, since its all oem sony firmware.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
What?? For real?? Everyone on here's been sayin' you have to root to get the special XZ1 Compact firmware to work. I'm so confused!! lol

But then you said no Smart Lock? So no facial recognition feature then?
[Sony Xperia XZ1  Questions & Answers] New Optimus:
I think the root method is for the older xperia xz premium. but the xz1 and the xz1 compact are essentially the same phone so you don't need to do anything with it.

Just put the phone in "download mode" not really sure what it is called on sony devices, and open newsflasher or flashtool and have the correct files in the folder.

I never mentioned smart lock I don't know who did but I believe that person might be having unrelated issues. I know smart lock appears to work on mine
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Interesting! So if I was to buy the upcoming XZ2 Premium, I would have to root it right to get VoLTE??

Yeah I dunno. If I had any issues I would NOT be happy about it. lol
[Sony Xperia XZ1  Questions & Answers] pbarrette:
You're confused because you don't actually read the posts that people make.

Read them again.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Someone had a post about if you could enable VoLTE on the XZ2 Premium? Please link the post then dude.

Why would I read every post? I don't own the XZ1 and don't plan on buying it either.
[Sony Xperia XZ1  Questions & Answers] pbarrette:
Look.

You're the only one talking about the XZ2P. The post from New Optimus specifically mentions that rooting is required on the XZP. You can't even read the post you're responding to?

If you don't have, nor do you intend to get the XZ1, then why are you making so many posts on the XZ1 forum?

If you can't be bothered to read the posts in the thread you keep posting in, then why should anyone bother to answer you at all?

Literally every question you've asked about the XZ1, XZ1c and XZP were already answered in previous posts. If you'd read them, you wouldn't have had to ask the questions.

If you have questions about a wholly different phone like the XZ2P, why not go there?
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
I knew he was talking about the XZ Premium, but I wanted to know if I could use the XZ1 Compact special firmware on the upcoming XZ2 Premium. I DID note the difference, but was asking a new question.

I'm in here finding out about the XZ1 C firmware, which I believe was discussed. The phone itself I don't care about. Even less about the XZ1 Compact.

Yeah, good idea.
[Sony Xperia XZ1  Questions & Answers] New Optimus:
Unfortunately the insides of the xz1 compact/xz1 are no where near the same as the xz2, or xz2 premium. I don't even know if its possible to use any of the firmware on the xz1 compact period.

If there is even a chance to do so I would not be surprised if rooting is required. That being said I do not recall anyone saying they could get VoLTE on the xz2, and it is out now, the premium isn't.
[Sony Xperia XZ1  Questions & Answers] RockStar2005:
Yeah. I figured it was prob a longshot at best. lol

Yes. Maybe in the next few mos someone will come up with a way. The XZ2 Premium could hopefully use that XZ2's firmware, but of course nothing is guaranteed until someone confirms.

Much appreciated Optimus! Have a good one.
[Sony Xperia XZ1  Questions & Answers] Uxorious:
Beware with the new G8342_Customized US_1310-4358_47.1.A.12.179_R6B.

It works fine with the G8441_Customized US_1310-4371_47.1.A.12.145_R8B modem, but I get stuck in a bootloop if I add the fingerprint files from G8342_Customized CE1_1310-4354_47.1.A.12.145_R7B.

Edit: I guess I'm stuck without fingerprint support for a few weeks...
[Sony Xperia XZ1  Questions & Answers] krchi:
Why not use another regions fingerprint files? Central Europe is not the only one with updates, use Customized AE. I really don't see the problem you are having there is nothing special about Central Europes fingerprint files.
[Sony Xperia XZ1  Questions & Answers] ms2398:
Was wondering if you ever got this working on your XZ F8332?
[Sony Xperia XZ1  Questions & Answers] Uxorious:
I've been playing around quite a bit with different combinations, and it's pretty interesting.

Firstly, I can't seem to find any benefits from mixing 3 firmwares. (US base + Non-US fingerprint/system + US compact radio).

The Non-US files copied for fingerprint/system is 90% of the full size, so that makes sense.

Secondly, while all the VoLTE stuff is available in the menus when I use CE1 base + US compact radio, it still falls back to HSPA when making a call.

So I'm back to AE + UScompact - so far that one is working perfectly.
[Sony Xperia XZ1  Questions & Answers] krchi:
That is why you use the US base for VoLTE..... The US base has the modem files, the XZ1C only enables the option. You still need to flash US base + another region finger print files + US XZ1C lte files to get all VoLTE and finger print. This has been tested by multiple users in this thread don't claim it doesn't work.
[Sony Xperia XZ1  Questions & Answers] Uxorious:
I'm not saying getting all features to work at the same time isn't possible. I've been doing that for a while.

Anyways, I just tested the "US + CE1 system/vendor + XZ1c oem" combination, and indeed you were right that VoLTE works like this.

"AE + XZ1c oem" works just as well as the above triple-mix.

"CE1 + XZ1c oem" has all the right menus, but still falls back to HSPA on calls.

Comparing the modem files, AE and CE1 have identical sin files. US is different.
[Sony Xperia XZ1  Questions & Answers] krchi:
So AE + XZ1c gives you working VoLTE?
[Sony Xperia XZ1  Questions & Answers] quitit:
So I tried to buy a used XZ1 Compact from Amazon since it was cheaper than new. What arrived instead was a normal XZ1, well I didn't know all about this VoLTE issue and no fingerprint scanner, but I tried to flash all these files and firmware to get a working XZ1 on US T-Mobile VoLTE+fingerprint. Well the model that was shipped to me was the International version G8341, so I tried to use the US(G8342) firmware as the base and used the file combination you listed, and I was unsuccessful in getting any signal. I guess it's not possible to get the International model (G8341) to work with VoLTE?
[Sony Xperia XZ1  Questions & Answers] krchi:
Try it again using my instructions and files I listed.

https://xdaforums.com/showpost.php?p=75984754&postcount=214
[Sony Xperia XZ1  Questions & Answers] quitit:
You suggest using another region other than US with the model G8342, which region did you chose? I would like to be sure to use the same files you did to ensure I am doing the right process.
[Sony Xperia XZ1  Questions & Answers] krchi:
I used the AE region, but any other region to enable fingerprint will work as long as its the same firmware.

---------- Post added at 10:12 AM ---------- Previous post was at 09:39 AM ----------

I see what you mean now, the May update somehow breaks VoLTE and Wifi-Calling I just flashed the files today.
[Sony Xperia XZ1  Questions & Answers] quitit:
Before you replied, I decided to use CE1's firmware files with XZ1c's firmware file and I was able to get LTE+ and fingerprint scanning to work, but when I make a call, in this case to T-Mo's CS line (611), the signal goes to "LTE" (not "+") then "H" (HSPA). I'll try the AE's firmware files this time around.
[Sony Xperia XZ1  Questions & Answers] krchi:
CE1 is fine, it looks like the May update broke VoLTE and Wifi Calling. I had been on the March security updates so I did not know.