Root 930U but use on T-Mobile w/Wifi Calling? - AT&T Samsung Galaxy S7 Questions & Answers

I have a stock fresh 930U (factory unlocked US variant), and I want to root it. However, if I do I need to use the AT&T firmware (from what I can tell). Is it possible to get the 930U rooted but still use T-Mobile's wifi calling/VoLTE?
Thanks for any help, I've read everything but can't figure out if this is do-able yet.

What are you asking? If you can flash att firmware on a U and still use T-Mobile wifi calling?
If so, why? T-Mobile is the only carrier that the U firmware supports wifi calling for

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Please help: Using a Verizon 7 EDGE in a GSM market with new SIM?

How do I get a Verizon S7 Edge to recognize a new GSM SIM? I want to use it on another carrier, and Verizon says it's not SIM-locked/carrier locked but when I put in the new SIM, it's not working.
Factory reset didn't work. Would an Odin flash work? IF not, what would?
Thanks. Not sure if I'm asking in the right place.
Flash the U firmware.
Using odin ^^
Depending on which carrier you are flashing to. You can flash the carrier specific file for whichever carrier you want, for example if you want to use it with T-Mobile you can download the T-Mobile Odin and PIT files to flash and it should work fine. Same with AT&T.
Or do as said above and flash the 935U firmware and it'll work fine. Though with this option there's no carrier extras like VOLTE, or wifi calling as far as I know.
I used another Sim on Verizon firmware. Look somewhere in connection settings. There was smthn about which network you want to use Verizon CDMA or GSM. Now i'm on U firmware.
A t-mobile SIM worked fine for me after entering the new APN settings. For best performance though, flash the U firmware to unlock the bands.

Vodafone Germany on SM-G935T

Hey guys! I brought my unlocked T-Mobile USA S7 Edge to Germany and it works fine with either Vodafone or Telekom, but no Wi-Fi Calling works. They suggested me to get one of their phones but since I had to fully pay for this device to get it unlocked I don't want to throw 800 bucks away like that.
Is there a way to get this to work? Is it possible to flash a different CP / Modem / Radio / Firmware that could potentially get this working? I know the bootloader is locked but I'm not sure if there are any workarounds as I've seen people successfully getting G935U firmware to work on their unlocked T Mobile S7E.
Any advice? Thanks in advance!
Anyone? ?
You can easily flash "T" model with "U" firmware - been there, works well.
What do you mean by wifi calling? Ggl duo/hangouts, whatsapp, all that kind of apps work fine on whichever firmware.
PS. Flashing T/U versions works even if your bootloader is locked (mine is).
Hey!
Thank you for your reply. I managed to Flash the U Firmware but WiFi Calling or VOLTE still won't work. I can over whatsapp and it's cool I guess but would be good especially when calling some people overseas who don't UE whatsapp as wifi calling means no international roaming charges.
That or also the ability to just flash about any custom Roms would be cool too.

Wifi Hotspot by switching firmware?

On the S7 I was able to get my wifi hotspot back on my locked AT&T S7 by odin flashing the t-mobile firmware, it also removed all the at&t carrier bloat, but I lost wifi calling. Is this possible on the AT&T S8. If so can someone tell me which firmware to flash? I have been searching but nothing comes up that is definitive or recent enough to be confident in it.
mumboender said:
On the S7 I was able to get my wifi hotspot back on my locked AT&T S7 by odin flashing the t-mobile firmware, it also removed all the at&t carrier bloat, but I lost wifi calling. Is this possible on the AT&T S8. If so can someone tell me which firmware to flash? I have been searching but nothing comes up that is definitive or recent enough to be confident in it.
Click to expand...
Click to collapse
It worked for me

Questions on flashing Verizon firmware to a factory unlocked U1 Galaxy S8

Hello everyone,
I have an unbranded, factory unlocked U1 Samsung Galaxy S8 that I am wanting to switch to Verizon Prepaid. Currently, it's running on Tracfone with the T-Mobile network. Wi-Fi Calling is a must-have for me, but I've heard that it will not work on Verizon with the factory unlocked Galaxy S8 model. It currently works on Tracfone/T-Mobile, though.
Rather than going the extreme route of getting another phone, I was hoping that it would be possible to just flash the Verizon firmware on it in order to gain Wi-Fi Calling and other carrier features from Verizon.
Below are some questions I have about this.
1. Is this likely to work, or would I just be better off to get a branded phone?
2. Is the process as simple as it sounds on the SamMobile site? Or does the process involve something more like this?
3. Will I be able to receive OTA updates after flashing carrier firmware?
4. Are there any particular issues or pitfalls that I should be aware of before attempting this? (besides possible data loss, of course)
5. Will I be able to flash it back 100% to the stock firmware later on if I want to sell it?
6. Is there any other way to get Verizon Wi-Fi Calling while staying on the unlocked firmware?
Any input would be appreciated.
Thanks!

Can I flash to T-Mobile?

I have a SM-G935V from Verizon running on 8.0 Oreo and I ported the number over to Mint Mobile. Mint runs on T-Mobile towers, but I want WiFi Calling/Texting and heard that flashing my phone over to T-Mobile will reenable that option for me.
1) How do I go about this?
2) Where do I get the version of Odin I need to flash properly w/o losing data?

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