S8 Custom ROMs and AT&T WiFi Calling - Samsung Galaxy S8 Questions and Answers

Are there any custom ROMs (and CSC files) that allow the S8 to successfully have WiFi Calling and VoLTE on the AT&T network??

I am running RENOVATE ICE 3.0 but you need the Notorious Kernel 1.9 for Volte to work on T. Some kernels do not support Volte, but Notorious does. You also need to flash ATT from the Flashable CSC Selection V1.0.0, and create/edit the /efs/imei/mps_code.dat and put ATT in there. You can also delete the /system/omc/ATT/res directory to get rid of the annoying T jingle and boot screen. You then need to call ATT and ask the friendly customer service person to update your IMEI. But when you give them your current IMEI, they will not be able to find it since it is not a ATT phone. So they will use the IMEI of a similar phone. That will get Volte to work. But WiFi will not as I think the IMEI must match exactly in their system for WiFi to work.

Hello. I'm also trying to figure out the same. How can I unlock the G955U? is that even possible?
Ideally I'd like to get the CSC Patch installed so I can get WiFi Calling on ATT, as I do not have any reception in my area. Any Help here would be appreciated.

Can anyone help here? Thanks.

jcrompton said:
Are there any custom ROMs (and CSC files) that allow the S8 to successfully have WiFi Calling and VoLTE on the AT&T network??
Click to expand...
Click to collapse
You can flash csc seletcion after the rom.
That package contains the csc of att and the US generic. That generic is the one that I use and it works volte, wifi calling in tmobile ...

Hi Eddie, would you happen to know how to Root the G955U? its the Unlocked version of the phone. I've followed every step for CF-Auto-Root through Odin, but it fails every time. It seems like the Bootloader is locked? Any help would be appreciated here.

EddiePR said:
You can flash csc seletcion after the rom.
That package contains the csc of att and the US generic. That generic is the one that I use and it works volte, wifi calling in tmobile ...
Click to expand...
Click to collapse
Thanks
But I'm still trying to confirm that someone got AT&T WiFi calling to work

indoline said:
Hi Eddie, would you happen to know how to Root the G955U? its the Unlocked version of the phone. I've followed every step for CF-Auto-Root through Odin, but it fails every time. It seems like the Bootloader is locked? Any help would be appreciated here.
Click to expand...
Click to collapse
If you want to know the current root status for Galaxy S8/S8+ go to this forum: https://forum.xda-developers.com/galaxy-s8/how-to/current-root-progress-g950u-g955u-t3623444
---------- Post added at 02:21 AM ---------- Previous post was at 02:19 AM ----------
indoline said:
Hello. I'm also trying to figure out the same. How can I unlock the G955U? is that even possible?
Ideally I'd like to get the CSC Patch installed so I can get WiFi Calling on ATT, as I do not have any reception in my area. Any Help here would be appreciated.
Click to expand...
Click to collapse
If you mean network unlock, then follow the ToS on AT&T mobile and eventually you will be allowed to unlock your phone. And for you to switch from the firmware of SM-G955U to SM-G955U1, you gotta go to this forum: https://forum.xda-developers.com/galaxy-s8/how-to/rd-carrier-switch-root-snapdragon-t3597473

You will not get wifi calling unless u can provide to att an imei from a device that has wifi calling. Only feature u will get working is volte. It's different them tmobile.
Sent from my SM-G950U1 using Tapatalk

Strange answers .....
I just wanted to know if anyone had WiFi calling working while on AT&T ??

jcrompton said:
Strange answers .....
I just wanted to know if anyone had WiFi calling working while on AT&T ??
Click to expand...
Click to collapse
They do with a working imei. Could be from another phone on same account.
Sent from my SM-G950U1 using Tapatalk

Thor2j said:
They do with a working imei. Could be from another phone on same account.
Click to expand...
Click to collapse
Thank you for the answer
I am familiar with the need for an IMEI from a branded device ..... But I'm not even completely sure that's working for the S8+ like it did for my S7
I just haven't gotten anyone to 100% confirm WiFi calling on AT&T even with proper IMEI

jcrompton said:
Strange answers .....
I just wanted to know if anyone had WiFi calling working while on AT&T ??
Click to expand...
Click to collapse
Well i don't know from experience with at&t firmware but at&t should have wifi calling by default. If not and if wifi calling is an important feature towards you, then the last resort answer you have is to flash unlock firmware onto your device since that's the firmware everyone can use while it supports wifi calling and VoLTE (Voice Over LTE)

DaNamesFrank said:
Well i don't know from experience with at&t firmware but at&t should have wifi calling by default. If not and if wifi calling is an important feature towards you, then the last resort answer you have is to flash unlock firmware onto your device since that's the firmware everyone can use while it supports wifi calling and VoLTE (Voice Over LTE)
Click to expand...
Click to collapse
Once again, per other threads and myself, simply flashing the att firmware will only give you VOLte. You can toggle the wifi calling but it will say your account doesn't have this feature after about 5 seconds. If u call them and give them an imei number that is to a device that is an att device with the feature it will work. This is different then tmobile which will allow u both without doing anything except flashing their firmware.
Sent from my SM-G950U1 using Tapatalk

Flame Red said:
I am running RENOVATE ICE 3.0 but you need the Notorious Kernel 1.9 for Volte to work on T. Some kernels do not support Volte, but Notorious does. You also need to flash ATT from the Flashable CSC Selection V1.0.0, and create/edit the /efs/imei/mps_code.dat and put ATT in there. You can also delete the /system/omc/ATT/res directory to get rid of the annoying T jingle and boot screen. You then need to call ATT and ask the friendly customer service person to update your IMEI. But when you give them your current IMEI, they will not be able to find it since it is not a ATT phone. So they will use the IMEI of a similar phone. That will get Volte to work. But WiFi will not as I think the IMEI must match exactly in their system for WiFi to work.
Click to expand...
Click to collapse
EddiePR said:
You can flash csc seletcion after the rom.
That package contains the csc of att and the US generic. That generic is the one that I use and it works volte, wifi calling in tmobile ...
Click to expand...
Click to collapse
Thor2j said:
You will not get wifi calling unless u can provide to att an imei from a device that has wifi calling. Only feature u will get working is volte. It's different them tmobile.
Sent from my SM-G950U1 using Tapatalk
Click to expand...
Click to collapse
Thor2j said:
They do with a working imei. Could be from another phone on same account.
Sent from my SM-G950U1 using Tapatalk
Click to expand...
Click to collapse
Thor2j said:
Once again, per other threads and myself, simply flashing the att firmware will only give you VOLte. You can toggle the wifi calling but it will say your account doesn't have this feature after about 5 seconds. If u call them and give them an imei number that is to a device that is an att device with the feature it will work. This is different then tmobile which will allow u both without doing anything except flashing their firmware.
Sent from my SM-G950U1 using Tapatalk
Click to expand...
Click to collapse
Hello all ..... ( and @Tkkg1994 )
I'm still trying to get a definitive answer --- Has anyone personally been able to get an unbranded S8 or S8+ to activate WiFi Calling on the AT&T network (not TMo or others) ??
I'm trying to facilitate an issue with using S8 Ports on my unbranded S7 Edge where we can get VoLTE to work nicely but WiFi Calling will not activate (on the S8 port based ROMs).
I am aware (and have been for quite a while) that you must have an AT&T branded IMEI to get this to work on AT&T. I am also aware that this step is not needed on TMobile or really any other network.
I have tried the branded S7 IMEI that works great on my S7 to activate WiFi Calling while using many (most) S7 based ROMs. I have even tried branded IMEI's from ATT branded S8's and S8+'s .... but I can't get WiFi calling to activate while on any of the S8 port based ROMS (I get VoLTE nicely with many ROMS esp the latest BatMan S8 port ROM)
So to troubleshoot I am trying to confirm that even with the S8 or S8+ that WIFi Calling is or is not a possibilty ??
Thanks

jcrompton said:
So to troubleshoot I am trying to confirm that even with the S8 or S8+ that WIFi Calling is or is not a possibilty ??
Thanks
Click to expand...
Click to collapse
I am no developer, but I believe there are two possible causes in the case of T WiFi failure on Exynos:
Perhaps T requires the IMEI to exactly match as a security measure, and since they cannot use an International model IMEI it will never work.
Or there is something specifically compiled for the Snapdragon process and so when it is extract it will not run on the Exynos.
Either way, it won't work. I posted a LOGCAT when enabling it failed, but it is beyond my capability to debug and no one seemed to be able to figure it out.

Related

Switch Firmware,

Hello, xda_developers.
I just got mail S7 Unlocked in the mail that I ordered from eBay, I believe it was a sweet deal CAD $549.99 + tax. I am with Telus BTW. Let's get to the point.
The phone is with Sprint which has bloatware and APN is locked out. I want to flash a new firmware onto the phone without Tripping the Knox. I looked into the 930U Firmware but don't know which one to pick. I looked into the thread: "Bloat free firmware 930U....anyone tried it?" and saw the part about root, so I backed out.
After I looked into the Sprint SM-G930P firmware and saw few different "Regions": SPR, XAS, and VMU. I found"SPR" is Sprint, and "VMU" is Virgin Mobile USA. For "XAS" I am not too sure, but "XAS image has the APN section unlocked". ("Here" )
Afterwards, I found the forum "Found a code...interesting...." and used the code "##BRAND#" and removed the Sprint boot logo, and some bloatware but the APN was still locked out, and still had "Hands-Free Activation".
I need help picking the right Firmware for my phone, which will let me add APN, and remove the "Hands-Free Activation". I do not want or need to root the phone.
The phone is up to the latest update:
Software Version: SG930PVPS2APG1 ,
Hardware version: REV0.6 ,
Baseband version: G930PVPS2APG1 ,
Build number: MMB29M.G930PVPS2APG1 .
I did not want to flash firmware without knowing for sure it will not brick the phone, brand new phone in a long time, I don't want to break it or brick it on the first day.
Aswell, I am not sure if I can flash a Canadian firmware, SM-G930W8 or the Global Firmware, SM-G930F.
Thank you for reading, hope you can help me out.
anjesh12 said:
Hello, xda_developers.
I just got mail S7 Unlocked in the mail that I ordered from eBay, I believe it was a sweet deal CAD $549.99 + tax. I am with Telus BTW. Let's get to the point.
The phone is with Sprint which has bloatware and APN is locked out. I want to flash a new firmware onto the phone without Tripping the Knox. I looked into the 930U Firmware but don't know which one to pick. I looked into the thread: "Bloat free firmware 930U....anyone tried it?" and saw the part about root, so I backed out.
After I looked into the Sprint SM-G930P firmware and saw few different "Regions": SPR, XAS, and VMU. I found"SPR" is Sprint, and "VMU" is Virgin Mobile USA. For "XAS" I am not too sure, but "XAS image has the APN section unlocked". ("Here" )
Afterwards, I found the forum "Found a code...interesting...." and used the code "##BRAND#" and removed the Sprint boot logo, and some bloatware but the APN was still locked out, and still had "Hands-Free Activation".
I need help picking the right Firmware for my phone, which will let me add APN, and remove the "Hands-Free Activation". I do not want or need to root the phone.
The phone is up to the latest update:
Software Version: SG930PVPS2APG1 ,
Hardware version: REV0.6 ,
Baseband version: G930PVPS2APG1 ,
Build number: MMB29M.G930PVPS2APG1 .
I did not want to flash firmware without knowing for sure it will not brick the phone, brand new phone in a long time, I don't want to break it or brick it on the first day.
Aswell, I am not sure if I can flash a Canadian firmware, SM-G930W8 or the Global Firmware, SM-G930F.
Thank you for reading, hope you can help me out.
Click to expand...
Click to collapse
The 930U firmware will work perfectly fine without root. No bloatware and you can modify the APN's.
Euronymous88 said:
The 930U firmware will work perfectly fine without root. No bloatware and you can modify the APN's.
Click to expand...
Click to collapse
the 930U firmware is bloatware free, and I don't have to root the phone? Also does it have the "Hands-Free Activation" or the "Activate this device" in Settings?
It's bloatware free and it doesn't require root. And when I flashed...it simply activated my device and there's no activate device in settings.
Euronymous88 said:
It's bloatware free and it doesn't require root. And when I flashed...it simply activated my device and there's no activate device in settings.
Click to expand...
Click to collapse
alright, thank you very much.
Going to go flash it now
edit: Quick Update, went to flash the G930U files(firmware?) and it all went smoothly. Takes time to register onto network. any fix without root?
edit 2: Just did a factory reset from recovery, seems to have fixed the slow network register
edit 3: The phone seems to run warmer than the sprint firmware, no idea why
Never mind, I am, an idiot.
skater95 said:
You have a Sprint S7 and was able to flash a firmware without any bloat on it?! Can you give me the link of which yoi downloaded? And did yoi use odin to flash it?
Click to expand...
Click to collapse
Read the thread again @skater95 the link and instructions are in it
Congrats on the phone! That is a good deal considering the phone goes for 899 brand new, and I'd assume around 600-750. But with black listing these days I wouldn't trust Kijiji etc.
Your phone should work fine except for LTE. Its missing I believe 2-3 bands for LTE but on the plus side it's the bands that bell/Telus don't really use much like 2600. So if you ever see soneone else have LTE and not you that would be why but, then again the bands you don't have usually are for rural areas
Enjoy the phone
Sent from my Nexus 5 using Tapatalk
PoppNLPatrick said:
Read the thread again @skater95 the link and instructions are in it
Click to expand...
Click to collapse
frostyisgod said:
Congrats on the phone! That is a good deal considering the phone goes for 899 brand new, and I'd assume around 600-750. But with black listing these days I wouldn't trust Kijiji etc.
Your phone should work fine except for LTE. Its missing I believe 2-3 bands for LTE but on the plus side it's the bands that bell/Telus don't really use much like 2600. So if you ever see soneone else have LTE and not you that would be why but, then again the bands you don't have usually are for rural areas
Enjoy the phone
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Thank you very much. It's a pretty nice deal, still going on I believe. I don't have to worry about the blacklist. Even without the 2600 band data works great, really don't mind not having a few LTE bands, for the price i got the phone for. With the 930U firmware, it works great.
frostyisgod said:
Congrats on the phone! That is a good deal considering the phone goes for 899 brand new, and I'd assume around 600-750. But with black listing these days I wouldn't trust Kijiji etc.
Your phone should work fine except for LTE. Its missing I believe 2-3 bands for LTE but on the plus side it's the bands that bell/Telus don't really use much like 2600. So if you ever see soneone else have LTE and not you that would be why but, then again the bands you don't have usually are for rural areas
Enjoy the phone
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
The U firmware has more/better LTE bands enabled than the Sprint (P) firmware. I strongly doubt it's missing any LTE bands used in Canada.
myphone12345 said:
The U firmware has more/better LTE bands enabled than the Sprint (P) firmware. I strongly doubt it's missing any LTE bands used in Canada.
Click to expand...
Click to collapse
I believe your correct with the U firmware It shouldn't be missing a band or 2 like it is on the Sprint firmware. But yes about the same price as you'd get it on Kijiji (since there's tax) but it's new and don't have to worry about the blacklist
myphone12345 said:
The U firmware has more/better LTE bands enabled than the Sprint (P) firmware. I strongly doubt it's missing any LTE bands used in Canada.
Click to expand...
Click to collapse
FWIW - here are the bands that are apparently supported in the 930U firmware. This is band priority list from the LTE section of the ##DATA# menu. Not sure which bands Canada uses, but it looks like the only major one missing might be band 17?
Cooljb said:
FWIW - here are the bands that are apparently supported in the 930U firmware. This is band priority list from the LTE section of the ##DATA# menu. Not sure which bands Canada uses, but it looks like the only major one missing might be band 17?
Click to expand...
Click to collapse
I think the Canadian networks may have started using MFBI on band 12 (like AT&T has). If so then B17 would no longer be necessary in Canada. The best place to verify this might be to post a question about it on the Bell and Rogers forums on Howardforums.
In G930UUEU2APEH thread it is said:
"root with the only g930a method there is right now"
So, this universal firmware can be rooted, right?
Can any one give me the link for downloading the 930U rom for my sprint sm-g930p and are they facing any problem with the same
jainmayur83 said:
Can any one give me the link for downloading the 930U rom for my sprint sm-g930p and are they facing any problem with the same
Click to expand...
Click to collapse
There are two download links in the OP of this thread. The google drive one appears to be working. That's where I downloaded it from.
http://forum.xda-developers.com/att-galaxy-s7/how-to/xda-community-love-g930u-t3415875
Cooljb said:
There are two download links in the OP of this thread. The google drive one appears to be working. That's where I downloaded it from.
http://forum.xda-developers.com/att-galaxy-s7/how-to/xda-community-love-g930u-t3415875
Click to expand...
Click to collapse
hi,
i downloaded the rom and tried flashing the phone, but in odin it came as "Fail" and now phone is gone. it is going in recovery and the phone is not starting
jainmayur83 said:
hi,
i downloaded the rom and tried flashing the phone, but in odin it came as "Fail" and now phone is gone. it is going in recovery and the phone is not starting
Click to expand...
Click to collapse
Did the actual flash fail, or did one or more of the MD5 checks fail? What version of Odin did you use? If any of the MD5 checks failed, you just need to download the firmware again - your download was corrupted. If the actual flash failed, the most common cause is the USB cable/connection. Try another USB cable, and/or another USB port on your computer, and don't move the phone or computer around while it's flashing. Odin is very temperamental if the connection is not perfect.
Cooljb said:
Did the actual flash fail, or did one or more of the MD5 checks fail? What version of Odin did you use? If any of the MD5 checks failed, you just need to download the firmware again - your download was corrupted. If the actual flash failed, the most common cause is the USB cable/connection. Try another USB cable, and/or another USB port on your computer, and don't move the phone or computer around while it's flashing. Odin is very temperamental if the connection is not perfect.
Click to expand...
Click to collapse
Hi i tried again and the rom was successfully flashed. Now the problem is that, it is not accepting my T-mobile sim card and there are still some options missing from the settings menu, such as "mobile networks, wifi calling, hotspot and tethering.. Plz help.. I am so confused
jainmayur83 said:
Hi i tried again and the rom was successfully flashed. Now the problem is that, it is not accepting my T-mobile sim card and there are still some options missing from the settings menu, such as "mobile networks, wifi calling, hotspot and tethering.. Plz help.. I am so confused
Click to expand...
Click to collapse
I'm confused too. Are you wanting to use it on Sprint or T-Mobile? Do you have a sprint account, and did your phone activate on Sprint? I don't have any experience using a non-Sprint sim with this phone/firmware. The only thing I can suggest it maybe do a factory reset and go through the setup/activation with the T-Mobile sim already in the phone. Good luck.
If you're wanting to use both Sprint and T-Mobile on this phone, I'm not sure if that's possible. From what I've read elsewhere, even though this firmware is unlocked, it can only be active on one carrier at a time. I don't think you can switch back and forth at will, without activating/deactivating from one carrier to the other. I could be wrong though, as I have not used anything but my original Sprint sim.

Is it possible to ROM 935F with t-mobile ROM?

I am looking to buy one of the international models with the Samsung CPU, but plan on using the phone on T-mobile's network and would really like to use wi-fi calling. Is it possible to use a rooted t-mobile ROM on this phone?
[email protected] said:
I am looking to buy one of the international models with the Samsung CPU, but plan on using the phone on T-mobile's network and would really like to use wi-fi calling. Is it possible to use a rooted t-mobile ROM on this phone?
Click to expand...
Click to collapse
The issue with that is, the international variant is Exynos (which is better, may I add ) and I think the T-Mobile (USA) variant is Snapdragon.
Because of the architecture you probably can't use just use a T-Mobile stock ROM but there might be some sort of tweaking you can do to get it working. I am from the UK and my carrier is EE which supports WiFi calling, so you might be able to start with something like that.
If you root the phone, you can flash the tmobile csc from the universal csc file (get the note 7 csc if you use a n7 port). With it, I have WiFi calling, volte including video call.
rp3 said:
If you root the phone, you can flash the tmobile csc from the universal csc file (get the note 7 csc if you use a n7 port). With it, I have WiFi calling, volte including video call.
Click to expand...
Click to collapse
CAN u provide link to the flashing of csc. Funny thing is that someone posted a sm935f on ebay and they mentioned that they messed up the csc flash. Is there a way to fix a messed up csc flash?
wphend00 said:
CAN u provide link to the flashing of csc. Funny thing is that someone posted a sm935f on ebay and they mentioned that they messed up the csc flash. Is there a way to fix a messed up csc flash?
Click to expand...
Click to collapse
CSC for S7 based Roms
http://forum.xda-developers.com/s7-edge/development/utility-flashable-csc-selection-30-t3392957
CSC for N7 Based rom (I personally use this rom: http://forum.xda-developers.com/s7-edge/development/rom-n7-rom-port-romcontrol-t3430358)
http://forum.xda-developers.com/note-7/development/utility-flashable-csc-selection-v1-0-t3450911 -- Choose the second download (ported snapdragon)
Fixing bad flash:
http://forum.xda-developers.com/s7-edge/how-to/guide-how-to-fix-check-drk-imei-issues-t3379516
No guarantees this will work.

Confused - Unlocked Samsung S8+ from Samsung ... on ATT

I just purchased an unlocked S8+ from Samsung to use on AT&T in the U.S.
Do I need to do anything to the phone to be able to use all of the AT&Ts features/ VoLTE / get OTA updates timely?
Any help is appreciated!
I was not able to get any of the features on AT&T (including voice over lte).
The updates will not be coming from AT&T, they come straight from Samsung.
Basically you bought a phone that can work on AT&T, everything that got to do with the phone is not related to AT&T and not it's responsibility.
NYGiants1984 said:
I just purchased an unlocked S8+ from Samsung to use on AT&T in the U.S.
Do I need to do anything to the phone to be able to use all of the AT&Ts features/ VoLTE / get OTA updates timely?
Any help is appreciated!
Click to expand...
Click to collapse
I also bought a unlocked S8 from Samsung and follows these instructions Got voice over LTE and Wi-Fi calling working great
https://forum.xda-developers.com/tm...-how-to-convert-to-100-stock-t-t3615957/page3
tlopez1973 said:
I also bought a unlocked S8 from Samsung and follows these instructions Got voice over LTE and Wi-Fi calling working great
https://forum.xda-developers.com/tm...-how-to-convert-to-100-stock-t-t3615957/page3
Click to expand...
Click to collapse
I was able to get wifi calling, but not VoLTE. What's your carrier codes? What did you tell Att was your imei?
keithnet said:
I was able to get wifi calling, but not VoLTE. What's your carrier codes? What did you tell Att was your imei?
Click to expand...
Click to collapse
I got volte when I flashed carrier change but instead of doing the Guide for the T-Mobile I did the AT&T one at the very end And had no need to call AT&T
I'm little confused about between "Carrier switch" and "flash standard firmware" section in the follow post. Basically, not sure what file to use. I just downloaded the latest ATT firmware which includes AP, CP, BL, CSC, USERDATA files. should i just flash all of them using ODIN and use the adb line to "ECHO-> ATT"? is there a specific order i need to follow? thx.
https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817
tlopez1973 said:
I also bought a unlocked S8 from Samsung and follows these instructions Got voice over LTE and Wi-Fi calling working great
https://forum.xda-developers.com/tm...-how-to-convert-to-100-stock-t-t3615957/page3
Click to expand...
Click to collapse
hovanhuang said:
I'm little confused about between "Carrier switch" and "flash standard firmware" section in the follow post. Basically, not sure what file to use. I just downloaded the latest ATT firmware which includes AP, CP, BL, CSC, USERDATA files. should i just flash all of them using ODIN and use the adb line to "ECHO-> ATT"? is there a specific order i need to follow? thx.
https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817
Click to expand...
Click to collapse
If you have an unlocked Galaxy S8 u1 I followed these instructions from the beginning but instead of flashing the T-Mobile firmware at the end I flashed the AT&T one it works great for me with wifi calling and voice over LTE
https://forum.xda-developers.com/tm.../guide-how-to-convert-to-100-stock-t-t3615957
what i don't understand is they use G950W which is a canadian firmware. I am on US ATT network so i want to use US ATT fireware.
tlopez1973 said:
If you have an unlocked Galaxy S8 u1 I followed these instructions from the beginning but instead of flashing the T-Mobile firmware at the end I flashed the AT&T one it works great for me with wifi calling and voice over LTE
https://forum.xda-developers.com/tm.../guide-how-to-convert-to-100-stock-t-t3615957
Click to expand...
Click to collapse
hovanhuang said:
what i don't understand is they use G950W which is a canadian firmware. I am on US ATT network so i want to use US ATT fireware.
Click to expand...
Click to collapse
Honestly I don't know why they Flash the Canadian one but I followed all the instructions and at the very end I flash the AT&T one and everything works fine honestly I don't know what's the purpose of flashing the Canadians home
tlopez1973 said:
Honestly I don't know why they Flash the Canadian one but I followed all the instructions and at the very end I flash the AT&T one and everything works fine honestly I don't know what's the purpose of flashing the Canadians home
Click to expand...
Click to collapse
I'm not seeing the att portion in that thread..
and this flashing, does it wipe the phone and you have US att and the 950U1 and it then still worked for the USA att? (giving hd voice)? (need hd voice for s3 watch and numbersync to work apparently)

If your unlocking your Sprint phone for another carrier.

Do not use the stock Sprint software Numbers will not come formatted correctly when you receive phone calls.
For instance when you get a call it should show like this.
+1-808-123-1234
But on the Sprint software with a non Sprint Sim Card it will show like this.
+808-123-1234
So anyone who's saved in your contacts it won't show there phone number. And you also can't easily call them back from your call log.
And this also prevents blocked numbers feature from working correctly.
If you flash the unlocked firmware or you flash the carrier firmware of your choice this issues will go away.
Sheon849 said:
Do not use the stock Sprint software Numbers will not come formatted correctly when you receive phone calls.
For instance when you get a call it should show like this.
+1-808-123-1234
But on the Sprint software with a non Sprint Sim Card it will show like this.
+808-123-1234
So anyone who's saved in your contacts it won't show there phone number. And you also can't easily call them back from your call log.
And this also prevents blocked numbers feature from working correctly.
If you flash the unlocked firmware or you flash the carrier firmware of your choice this issues will go away.
Click to expand...
Click to collapse
Hmm, maybe this is why Google Voice can't send mms for me? I'm DSU'ed on G935P and using a Mint SIM (T-Mobile). When I try to send a mms from Google Voice, it says mms can't be sent to international numbers.
Sent from my SM-G935P using Tapatalk
Sim unlock.
So if I flash the unlocked firmware. Will this affect my sim unlock that I just paid for?
Sprint unlock
beauoare said:
So if I flash the unlocked firmware. Will this affect my sim unlock that I just paid for?
Click to expand...
Click to collapse
Nah it wouldn't reverse the unlock status, I'm 200% sure it wouldn't change anything. I personally unlock and flash the latest G955U1 and G950U1 firmware AQH3 on 6 S8+ and 1 S8. It's works great on All US carriers, you can also flash each 4 individual Carrier firmware. I have flash all of the firmware each carrier release on my SPRINT S8's with zero problems. Enjoy
Were did you get their stock firmwares? Looking for,sprints and you used a modified Odin to flash?
Hi, I'm trying to get my unlocked sprint s8 plus to be used on Verizon but no luck so far. Is this even possible.. Any advice would be appreciated. Thanks
Sent from my SM-N950U1 using XDA-Developers Legacy app
Hi guys, same thing happen to me, check this out.
Go to phone/settinga/more settings and uncheck the option of US dial
kdecoteau1 said:
Nah it wouldn't reverse the unlock status, I'm 200% sure it wouldn't change anything. I personally unlock and flash the latest G955U1 and G950U1 firmware AQH3 on 6 S8+ and 1 S8. It's works great on All US carriers, you can also flash each 4 individual Carrier firmware. I have flash all of the firmware each carrier release on my SPRINT S8's with zero problems. Enjoy
Click to expand...
Click to collapse
Hello,
There is no root forum on here. How did you find out how to flash?
KLY725 said:
Hi, I'm trying to get my unlocked sprint s8 plus to be used on Verizon but no luck so far. Is this even possible.. Any advice would be appreciated. Thanks
Click to expand...
Click to collapse
Did you ever get your phone unlocked ?
I have a Sprint Galaxy S8+. It has been unlocked by Sprint. I am giving it to my daughter and want to change the firmware to MetroPCS firmware for her. I have the latest T-Mobile and MetroPCS variant firmwares. Do I need a special ODIN to perform this? I'm a little confused because I keep seeing discussions about modded ODIN versions for the Galaxy S8 and S8+

950u downgrade

Ok so I bought a s8 950U the other night and without thinking of root possibilities I updated everything....including software so I'm running 8.0.0 with experience version 9.0.....now in my research only on XDA forums, because it's the only place I trust for my rooting, I'm only finding things for my version to root as long as Its on nougat...now my question is can I downgrade back to nougat using odin? And can I download any firmware from a mobile to do tgis?
Bump please I need help
As long as its bootloader 2 firmware you can dowgrade to nougat
adj998 said:
As long as its bootloader 2 firmware you can dowgrade to nougat
Click to expand...
Click to collapse
The bootloader is g950usqu2crc5
Here is a screenshot
You can downgrade to nougat with a firmware with a V2 bootloader..
And then you can go here
https://forum.xda-developers.com/galaxy-s8/development/root-partcyborgrom-aqi6-deodexed-t3702988
Next question will this unlock my phone?
Reason I'm doing this is because the person I bought it from said it was a cspire phone and I put my cricket wireless Sim in and it works great but I can't get mms to work and it don't give me an option to turn off 4g or lte and where I live turning off 4g/lte gives me better service in my house
Unlock?? As carrier unlock?? Im a little confused on that one...as for the on/off 4g or lte ..sometimes its due to carrier firmware limitations.. and on the mms you may want to check your apn settings.. i know that because i have att and i flash the the 950u1 firmware and i had to setup the apn to get mms and lte service..
Yes carrier unlock and see I was figuring it had to do with the carriers firmware but I found on sammobile a US version but all it said was US TMK and IS USC and i don't know the difference...still learning that part but I needed to make sure that's the one I needed to get before trying to downgrade and I was hoping the rooting would carrier unlock my phone and possibly get it to where I can turn lte on off....
And as far as the apn settings go I've tried crickets apn settings a couple different times and still not working but my internet works fine unless I'm at home and got 2 bars lte but can't get crap to load
Bamablood94 said:
Yes carrier unlock and see I was figuring it had to do with the carriers firmware but I found on sammobile a US version but all it said was US TMK and IS USC and i don't know the difference...still learning that part but I needed to make sure that's the one I needed to get before trying to downgrade and I was hoping the rooting would carrier unlock my phone and possibly get it to where I can turn lte on off....
And as far as the apn settings go I've tried crickets apn settings a couple different times and still not working but my internet works fine unless I'm at home and got 2 bars lte but can't get crap to load
Click to expand...
Click to collapse
Flash the G950U1 firmware, that's the carrier free firmware and make sure your CSC is XAA/XAA
You lost me at the xaa/xaa part
Bamablood94 said:
You lost me at the xaa/xaa part
Click to expand...
Click to collapse
When you look at the about phone..there is a part that show your phone carrier config like(att/att;vzw/vzw) etc..
Xaa/xaa means you wont haave any carrier branding or apps installed ...its just samsung stock firmware..
Alright gotcha ya. I appreciate it.

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