yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Sunnyschlecht:
Thank you so much. Just a heads up the WiFi calling gives me ER08 when trying to connect, so I'm hoping for your magical work. :)
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] aramisathei:
I haven't tried with Nougat, but that hasn't been an issue for MM.

I'm also using a G935FD with wifi-calling, VoLTE, etc. on T-mobile using Superman 1.17 and TMB CSC via CSC selector (1.8).

From what I've experienced, the second sim slot doesn't come into play unless you're actually using two sims; otherwise it just functions as an SD slot.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] aaronc_98:
I flashed this and am on T-mobile. Wifi calling works but I am not able to connect to the t-mobile netwrok at all - my signal bar indicator stays at zero bars and I am not connecting. The APN is correct, and LTE DIscovery says not connected. I reflashed the TMB support file and it still does not work.

Any ideas?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] rp3:
I did get this working (t-mobile support files but with other roms (both ontheedge 5.3 and KingofNougat 3) . I had that error a few times. To get things working, I flashed the roms with their default csc, rebooted. I got a no signal). I rebooted and got a signal. I saw this step in one of the rom's forums as being necessary with magdisk. Once I was good signal-wise, I rebooted and flashed the support package. It now works for wifi + volte. It has both the volte signal and the round (rcs) logo.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] aaronc_98:
I will give it a try... I believe that you said you flashed another rom with their default CSC then flashed the TMB support package, but I dont believe that you are saying you got it working with this ROM, is that correct?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] rp3:
Correct
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Sunnyschlecht:
I can confirm it is indeed working on the new ZPL3 beta. Just had to reset all the settings and now WiFi calling works without a problem. I'm just on the stock beta ZPL3. Waiting for superstock or something.

Thanks so much for your awesome work!! I waited for this a long time.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] aaronc_98:
I also got it working with the ZPL3 beta, but not the Rom in the OP.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Sunnyschlecht:
That is correct. Flashed ZPL3 then tmb files, dm verity, disable verification.

First had some issues then just reset settings and just reboot and I was fine.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
So are you able to use T-Mobile Wi-Fi Calling and voLTE?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] aaronc_98:
Yes wifi calling and VOLTE are working for me on Tmo
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Sunnyschlecht:
Yes WiFi calling and Volte works fine here.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
[MENTION=4277844]chenxiaolong[/MENTION] with your G935F base, did you keep it the same? What did you remove/add for this so that the TMB CSC package works?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
Thanks guys - I am looking at doing this on my G935F but wondering if I need his base or if I can just take any build?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
The base is completely unmodified. I took the OTA to PKK, flashed TWRP, mounted /system read-only to preserve the dm-verity hashes, and then dumped the system image. The TMB support package should work fine in any Nougat firmware.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
Glad to see it's working for you guys! I'll be updating the base image to the latest beta either Friday or Saturday.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
Excellent. Have you tried this with S7?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
I have not. I can't really create a base image since no Odin images were released for the later betas and I don't have a regular S7 to take the OTAs.

With that said, the TMB support package most likely will since there's no device-specific code in there.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] alitaleb121@gmail.com:
I did everything as listed..and backed up efs then restored it..but i have issue that no carrier signal it gives the signal with X on it???
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Catscrash:
Hi,

will this work on T-Mobile Germany? I have G935F and with original T-Mobile Germany Firmware VoLTE and Wifi Calling are active on Android 6.0.1, so I'd be interested to know, if this Nougat ROM would have all that for T-Mobile Germany?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
Ok - so this is all based on using the Nougat build - my mistake.

So if I am currently on 6.0.1 on my S7Edge, are there any issues with flashing this base ROM?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
The base image has been updated to G935FXXU1ZPL3.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
From what I've read, the Nougat ROMs are compatible with the Marshmallow bootloader and modem, so I would assume that it would work. I have not personally tested this though.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
It would work, but you most likely won't get VoLTE and WiFi calling as those components are specific to T-Mobile USA in this ROM. Does your country/carrier get the official Nougat beta?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
Don't restore the EFS partition unless you plan on going to a different ROM. The install process changes the CSC to "TMB" (which is saved in the /efs partition). If you restore the backup, it will undo the change.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] alitaleb121@gmail.com:
Even when not restoring efs same issue...
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Sunnyschlecht:
Working perfectly fine here on helios 4.1.1. Thank you for your hard work. Is there a zpl3 update for the tmb csc files?

It doesn't really matter since it's working, I'm just wondering.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Catscrash:
Thanks. I'm not sure about that, how would I find out if it does?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] BigE:
Works like a charm on my FD device, and it should work on any ZPL3 based ROM. Happy camper here. Thank you ! WiFi calling is so nice to have , especially because Tmo has spotty reception in many buildings... And free WiFi is easy to find..
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Spartoi:
I was also getting no data/service on T-Mobile after flashing this ROM/TMO package even after several reboots. What fixed it for me was enabling Airplane mode for a few seconds and then disabling it. Then I got service/data. (Make sure the T-Mobile APN is selected as well as it wasn't by default for me when I installed the ROM).
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
I am on a TMo 935T and think I may get a 935F, as TMo has apparently decided to skip upgrading the towers around me, so I would not be giving up higher download speeds.

I am on the Beta, but may others missed it and do not have the nerve to try the Verizon version like I did earlier. Question, if this ROM is based on the Stock OEM rom, Could it be flashed on a locked bootloader phone? As this is only the ROM, the other ODIN components should be OK as is I would think ( ODIN'd TMo modem on top of Verizon Beta and it worked really good - even got 256 QAM at over 120 Mbs in a building in W. Palm Beach).

If so - there would be many happy US TMo users who missed out on the Beta's.

A problem would be it would have to be in an ODIN file.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
I'm not quite sure what you're asking with regards to the ROM. It is for the Exynos G935F and thus, won't work on any US models.

On a more general note. this ROM is based on a completely unmodified dump of the G935FXXU1ZPL3. However, due to how Samsung implemented dm-verity, it will never pass the dm-verity check unless you've taken the OTA for that version in the past.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] tyrone1:
You get both Sims working too?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] BigE:
Haven't tried yet. I use a SD card and my other SIM is not working in the US..
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
I have used international ROM,s on tmobile phones most of the time, as bootliader and baseband were always US TMo.

However, the verify would probably mess it up anyway (although I odin'd and flashed Verizon roms).
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Misterjunky:
Tmobile Carrier - G935F S7E - Marshmallow 6.1 custom rom.

S7E​

I was just wondering if anyone here has tried flashing the TMB Tmobile zip

file on a custom deodexed Marshmallow 6.1 rom using a G935F Samsung

S7 Edge phone and have wifi calling and volte working properly in USA?

Thanks, have a great day!
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
This has been upgraded to 7.0. Maybe an older Tmo zip would work.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] tyrone1:
It didn't work. I tried flashing over Superman rom and kept getting vsimservice process stopped over and over where phone is unusable.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
Did you flash the 7.0 firmware on to a 6.0 ROM?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] tyrone1:
I think the guy was specifically asking if the CSC would work on marshmallow custom ROM which it didn't.

I pretty sure it work on 7.0 no problem.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] rp3:
There is a solution for running t-mobile on a 6.0.1 rom. You should go here:

http://xdaforums.com/s7-edge/development/utility-flashable-csc-selection-30-t3392957

Read the first post for instructions specific to your needs. Otherwise, this is discussing t-mobile support on the 7.0 betas
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] tensux:
this works on my 930f. i extracted the zip and flashed just the G935TUVU4ZPKK_G935TTMB4ZPKK_TMB_Support_Package-1.zip file.

i lost the download booster but now have wifi calling and volte
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] tortillathehun:
I just flashed the T-Mobile support package on my G935F, on baseband ZPLN. When I rebooted I got the normal TMo prompt about Wi-Fi calling, but I can't find any Wi-Fi calling or VoLTE related options in the settings.

Any thoughts?

EDIT: Someone hand me the dunce cap. I didn't have my SIM in the phone. Shut down, inserted SIM, booted back up and settings are there as expected. Thanks for your work op!
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] aaronc_98:
I am getting double texts sent and received. Anybody have a solution for this?

Is anyone getting 2 texts? everything else works great.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Interceptor777:
Besides the T-Mobile modifications, have any other mods been made to the OS?

Also does Android Pay work on this ROM? and if not, is there a way to make it work?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] VinylJStar:
+1
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Flash-User:
Is this csc also working in germany with volte and wifi call?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Interceptor777:
Pretty sure it's only got the US T-Mobile network.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] VinylJStar:
Ok, I think I have a solution. I am a beta tester for TMobile Digits. I froze com.sec.vsimservice and I stopped receiving double text. Are you a Digits tester?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] aaronc_98:
Yes, but I installed another rom and it solved the problem that way as well
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] yaesudx:
This Nougat Rom runs perfekt on t mobile Germany with WiFi call read on page 4

https://xdaforums.com/s7-edge/development/rom-nougat-7-beta5-g935f-zplh-tmobile-t3524571/page4
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] ndiguy5:
Good work new favorite rom
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] chenxiaolong:
The base ROM has now been updated to the first non-beta version of Nougat! (G935FXXU1DPLT)
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
This ROM and your duel boot will result in me getting a 835f soon (to other reads also - what are good sources to purchase in US?).

Which LTE bands over here work as is and could the us tmo modem only be flashed to get them all (like I did with Verizon beta - plus tmo apn)?

Have seen in posts elsewhere that US modems cannot be flashed on this phone. The remaining question is has ANYONE gotten TMo band 12 working and gotten the high connections speeds (got 120,000+ on 935T) on this device.

The specs show LTE bands: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 40, 41, 38, 39 Bands on this 934F, but does it work on TMo here?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jtford:
Just gotta say, I'm running these mods with the latest King of Nougat rom and everything works like a champ! Literally haven't found a single bug yet. Volte, wifi calling, etc., all are great. Super smooth with crazy battery life as well. Awesome job with the CSC work. Keep it up. BTW, I'm using the 935FD if anyone is wondering. Oh yea, one last thing; I'm using the stock kernel that came with the rom. Anybody have any suggestions on a custom kernel?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
Are both the ROM and the TMo mod file patchable (primary ROM) as-is right now ?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] naruto.ninjakid:
Can the Package be flashed on the latest SuperMan rom based on Nougat ? Its based on DQB3 ?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] BigE:
I am on Helios , another DQB3 ROM, and it works flawlessly, so I would assume it will be working fine.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] naruto.ninjakid:
Did you flash a default CSC before this package or no? Super Man comes blank then you choose the CSC you want the ROM to load. Is picking BTU as primary CSC initially OK ?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] BigE:
Helios has all sort of options. I always start with BTU, but it should not matter. I flash TMB without boot.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] naruto.ninjakid:
Thanks a lot. Been rally helpful. Will try this out tomorow on Superman Nougat version.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Interceptor777:
Yeah using this with ambasadii's Nougat v9.0 and it works flawlessly.

Absolutely no reason it wouldn't work on SupermanROM.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] naruto.ninjakid:
Thanks for the confirmation as well.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] naruto.ninjakid:
Worked Perfectly

Would like to confirm this mod is working on Superman version 2.1 which is a Nougat ROM as well. T-Mobile users rejoice lol. Just had to perform a few CSC edits to get Mobile Data toggle back.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] derektm.:
Worked perfect for me. Flashed stock Odin Nougat BTU on G930F, booted once (but didn't setup), followed standard TWRP install procedures, flashed OP's carrier settings zip in TWRP, Profit.

Thanks OP!
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] aramisathei:
Tried this on Superman.

Kind of work, but the carrier aggregation wasn't setup properly like in https://xdaforums.com/s7-edge/development/rom-nougat-7-dplt-wifi-calling-volte-t3540723.

It remained 7-7 instead of 2-4-12, etc.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Interceptor777:
Would Samsung Pay US work if I flash this over SuperMan 2.2 which has 0x0 Knox flags in kernel. People have got it working but with Russian or Korean CSC which doesn't work in US.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] naruto.ninjakid:
I was wondering about this. Saw in the thread they mentioned Samsung pay is working since 2.0. I'm on the tmobile csc and when I open the app it says Samsung pay is coming soon.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Interceptor777:
I tried it, but I only got as far as the add card screen.

As soon as I put my card number in, it either loads forever or says failed to connect to server. This is using SuperStock Kernel with ambasadii v10 ROM and TMB CSC with this.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] naruto.ninjakid:
I'm OK with it. I came into this thinking Samsung pay would never work but if we do get it it's a bonus.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Interceptor777:
Right now I just want it working on my Gear S2 Classic. Everywhere I go it says it is built into the firmware and you have to activate through the Gear app, but it's not there ;-;

Everything is on latest too, I'm gonna try SuperMan 2.2 with Samsung Pay and Knox installed and see if it works.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] bdvince:
No matter what method I use to try to get T-Mobile features to work there's problem somewhere. This rom works great except for if I'm using HD Voice (VoLTE) the other caller either cannot hear me or I sound like a computer-voice. If I turn off VoLTE there is absolutely no problem. With Superman ROM and his TMB package in the CSC selection tool the wifi calling did not work (WfcService.apk constantly crashing).

Any idea why the VoLTE is giving broken calls? I have full service when this is happening so I doubt that's a problem.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Interceptor777:
Try the support package from this ROM on Superman ROM, it works perfectly.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
Also king of nougat Rom - but only with stock launcher.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] bdvince:
Notice that the thread title and files in the OP were updated to "TMoblify". What is the difference between this package and the old Tmobile Support Pack? Is it necessary to update the CSC files once they are set?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] got2trythis:
#chenxiaolong, chenxiaolong thanks for your great work. I have tried this on stock ROM and several custom ROMs including S8 ports and it worked flawlessly on my G935F. Are you planning to update the CSC level to the latest whenever available from T-Mobile?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] king3opobn:
https://xdaforums.com/showthread.php?t=3392957
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
Am I correct in reading that you used this on a stock ROM which had no modifications? Or did you use TWRP to flash the CSC zip?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] got2trythis:
Stock with no modification. Just pure stock (any CSC, mine was the latest BTU), TWRP, Flash this Zip. No other changes are needed. This is not just a CSC Changer. Although it changes your CSC to TMB it also adds all the T-Mobile carrier and wifi calling files. Just please note that, you won’t be able to flash from TWRP without formatting the data partition so if this is the first time you have TWRP make sure your data is backed up by another program or Samsung Cloud.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
Yeah - trying to flash with heimdall (which does work btw :P ) and twrp just won't flash - so once I get that sorted out I will give this a try
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] spencersj:
Does this work on the G935F Duos?

Do you know if this can be safely applied to the G935FD ? Thank you.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] MegaMan X:
Were you eventually able to successfully flash this Tmobilfy package using Heimdall onto a SM-G935F?

I'm currently using Exynos variant (SM-G935F) with stock recovery, Knox 0x0, and working Samsung Pay. However, I want to flash/change the CSC to TMB. I don't want to give up Samsung Pay or Knox - but I want to enable WiFi Calling for T-Mobile US. With not root access, I'm hoping Heimdall worked for you in getting this to run, just hope you have confirmation.

Current Details:

Bootloader Version: G935FXXS1DQHF

PDA Version: G935FXXS1DQHF

CSC Version: G935FOXA1DQG1

Baseband Version: G935FXXU1DQD7

Active CSC: BTU (Available CSC: BTU, CPW, DBT, ITV, KOR, NEE, XEF, XEO, XEU)
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
If you're trying to avoid tripping Knox, then don't flash anything to your device.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] MegaMan X:
So you did it get to work eventually with Heimdall? Even if it meant tripping Knox?

Is there a way to use Samsung Pay with Knox tripped if I proceed forward?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
I got it to work on the S7 Edge but had to flash via TWRP which trips Knox. There is no way to do this without tripping Knox, and there is no way to use Samsung Pay with Knox tripped as far as I know
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
I had flashed ROMs with flashify app without tripping knox (on a 935t with locked bootloader and eng. kernel) , but they would only boot up if i used the eng kernel. Never tried it with my 935f.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] jerdog:
ROMs are different as that's the entire package and the eng kernel passes. Doing what is required to flash this will trip Knox (custom recovery bit will flip)
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] nigchess:
Short guide would be very helpful

First thanks for the great solution posted. Can anyone post a short guide on how to have this done? Will Odin work for this? What steps or boxes to select? How do I backup the ef partitions prior? Will this wipe all data on the phone? I have a G935F and G935FD international and hoping it will bring the wifi calling to it. Thanks a lot!
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] reedog117:
Can someone here verify a combination of Tmoblify and a custom ROM that guarantees Carrier Aggregation on LTE Bands 2, 4, and 12 working properly?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
I have 2 & 4 but no 12 here to check. TMo is touting band 7 here but even with a Tmo s7 it is not picked up.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] reedog117:
I think you're thinking of T-Mobile in another country. Here in the US, T-mobile USA only uses LTE bands 2, 4, and 12 (and sometimes bands 5 and 71).
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] gaww:
A tmo tech rep said that here.
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] mokash34:
Thanks for the hard work OP. I'm a bit rusty when it comes to flashing, especially Samsung phones.

I have a completely stock SM-G935FD that I use on T-Mobile. It is current on all updates. Do I flash this like a normal ROM or via some tool? Do I need to have a custom recovery?
[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] tech927:
I just updated my s7 g930f to Oreo using the BTU rom from sammobile. I was under the impression from the release notes that Wifi calling and Volte with visual voice mail would all be working. Alas while Oreo seems much snappier and the battery life is much superior this is not the case.

I was wondering does this utility work on the G930F and will using it enable the above features?

Thanks.

Dave.