Any way to get wifi calling on unlocked s9? - Samsung Galaxy S9 Questions & Answers

Is there any way to get wifi calling on att with an unlocked s9 from best buy? Flashing att firmware or would it be best to get the att model? Must have wifi calling for work reasons and I hate all the bloatware but might not have a choice.

at&t probably blocks it, if you don't get their version. I have an unlocked, but on T-Mobile, and it works.

I flashed the AT&T firmware on my unlocked S9 and wifi calling and video calling worked.
With the stock firmware on the unlocked S9 nether option was there

Can you point me in the direction of a download for the stock firmware for AT&T? I'm wanting to do the same as well, but feeling pretty clueless about where to obtain it. thanks!

Same here. It works for me on T-Mobile

If I flash the att firmware will I still get firmware updates?

f10a said:
Flashing att firmware or would it be best to get the att model?
Click to expand...
Click to collapse
if you flash the att firmware or buy it straight from att you will end up a device supporting the same capabilities. So it's down to your tech skills or budget.

Where can I find the latest att firmware? I did not see it on sammobile.

How to
Step 1 Go to this thread for Firmware (thanks @iBowToAndroid)
You will want to go to the link for the U firmware and find the folder with the AT&T userdata file (RB7) download the user data file and the full firmware.
Step 2 Go to this thread to get the modified version of Odin that recognizes the GS9 firmware files. (Thanks @mweinbach and Raymondf )
You will then flash the downloaded files from Step 1 in Odin, after flashing the firmware the phone will boot into recovery and you will need to wipe data and cache.

Thanks so much... that did actually help me... as a fairly tech savvy person who doesn't really get into this stuff much, the lingo I didn't know was leading me astray... I had come across that thread but didn't recognize it as anything that would help me. Thanks again! Onward to bricking my phone!

StolenVW said:
I flashed the AT&T firmware on my unlocked S9 and wifi calling and video calling worked.
With the stock firmware on the unlocked S9 nether option was there
Click to expand...
Click to collapse
Thanks for the info. A follow-up question: is it possible to flash it back to the stock unlocked firmware? The reason is that I'll need to use foreign SIM card when I travel overseas.

handydandy said:
Thanks for the info. A follow-up question: is it possible to flash it back to the stock unlocked firmware? The reason is that I'll need to use foreign SIM card when I travel overseas.
Click to expand...
Click to collapse
I have unlocked version on TMobile and wifi calling works just fine.

Do you have to flash the att firmware to the unlocked version in order to get VoLTE? I don’t care about WiFi calling, just hd calling and being able to stay on lte when making a call, rather than have it drop to HSPA during the call.

StolenVW said:
I flashed the AT&T firmware on my unlocked S9 and wifi calling and video calling worked.
With the stock firmware on the unlocked S9 nether option was there
Click to expand...
Click to collapse
Probably wont last. Unless att has an imei number from an wifi calling att phone on that account it will eventually go away.

Thor2j said:
Probably wont last. Unless att has an imei number from an wifi calling att phone on that account it will eventually go away.
Click to expand...
Click to collapse
I have unlocked S9 - I have wifi calling on tmobile and att. It's in the phone app settings. Not the device settings.

Wifi Calling
Here's a screenshot

sd_N said:
I have unlocked S9 - I have wifi calling on tmobile and att. It's in the phone app settings. Not the device settings.
Click to expand...
Click to collapse
I understand, but unless att has changed its policies in the last month, if u do not have an imei number on that account that is an att phone with wifi calling it will turn itself off as soon as your phone is interrogated by the network. Theres 100 threads on it , applies to unlocked s8, s7, etc...
Toggle is there because of firmware, not because it works.

Thor2j said:
I understand, but unless att has changed its policies in the last month, if u do not have an imei number on that account that is an att phone with wifi calling it will turn itself off as soon as your phone is interrogated by the network. Theres 100 threads on it , applies to unlocked s8, s7, etc...
Toggle is there because of firmware, not because it works.
Click to expand...
Click to collapse
That's the way it's supposed to work.

Any help/guidance for me??
I have tried a few times to use the March 2018 RB7 files with the ATT user data to get my phone to ATT stock - primarily for the Enhanced LTE (data and voice at the same time), as well as Wifi Calling. I can't get that version to load. I did get a more recent version to load (RK1) - and maybe that is the issue. Just wondering if there is a newer set of files and what specifically I should use (AP,BL... UserData) to get the phone fully set to AT&T. I now have the wifi calling option, just can't get it enabled. Any help is appreciated.

salevine said:
I have tried a few times to use the March 2018 RB7 files with the ATT user data to get my phone to ATT stock - primarily for the Enhanced LTE (data and voice at the same time), as well as Wifi Calling. I can't get that version to load. I did get a more recent version to load (RK1) - and maybe that is the issue. Just wondering if there is a newer set of files and what specifically I should use (AP,BL... UserData) to get the phone fully set to AT&T. I now have the wifi calling option, just can't get it enabled. Any help is appreciated.
Click to expand...
Click to collapse
When you try to enable it do any of the AT&T Wifi calling configuration screens pop up?

Related

[Q] t-mobile s4 with at&t stock firmware

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can I flash a at&t stock firmware with odin to my T-Mobile m919 with out any problems...right now my s4 is sim unlocked and im on at&t network .and it seems like its working ok but signal a little on the low side and spotty lte service....would there be any advantage flashing at&t's stock firmware to use on att network ...would my service and signal be any better.....if I wanted to would I be able to flash back to T-Mobile stock firmware...will it work....anyone try this ..anything I should know before I do this ...thanks in advance
Yes, you can. but be aware that you will lose t mobile features like wifi calling which is really useful.
re: wifi calling
XxKINGxX2580 said:
Yes, you can. but be aware that you will lose t mobile features like wifi calling which is really useful.
Click to expand...
Click to collapse
He will NOT loose Tmobile wifi because he never had it, if he has an AT&T unlocked phone and
odin flashes any tmobile rom there will be no wifi calling because AT&T network itself does not offer it.
The only way he will have Wifi calling would be if he switched from the AT&T network to Tmobile network.
No one will have wifi calling regardless which rom they flash unless they have a tmobile sim card.
hope this clears things up a bit.
Misterjunky said:
He will NOT loose Tmobile wifi because he never had it, if he has an AT&T unlocked phone and
odin flashes any tmobile rom there will be no wifi calling because AT&T network itself does not offer it.
The only way he will have Wifi calling would be if he switched from the AT&T network to Tmobile network.
No one will have wifi calling regardless which rom they flash unless they have a tmobile sim card.
hope this clears things up a bit.
Click to expand...
Click to collapse
I have a T-Mobile phone I use on at&t network ...flashing at&t stock firmware wont lock my phone right ..and should be able to flash back to T-Mobile stock firmware if I wanted to right..wont relock sim or bootloader....thanks guys
re: locked/unlocked
[email protected] said:
I have a T-Mobile phone I use on at&t network ...flashing at&t stock firmware wont lock my phone right ..and should be able to flash back to T-Mobile stock firmware if I wanted to right..wont relock sim or bootloader....thanks guys
Click to expand...
Click to collapse
Nope, it won't lock or re-lock your phone, once a phone is unlocked properly it will stay that way
regardless which rom you flash and regardless if you're on the AT&T network or Tmobile network.
Do not Odin flash the AT&T stock firmware on a Tmobile phone even if it's unlocked.
If you do you will not be able to make or receive any phone calls.
You can flash AT&T or Tmobile CWM/TWRP flashable stock or custom zip file roms because
those do not contain the radio/modem images like the Odin flash firmware do.
If you odin flash back to stock Tmobile firmware you will loose root unless you re-root after flashing.
As far as bootloaders go, a Tmobile phone requires a Tmobile bootloader, but you don't need to worry
about that if you flash the stock official tmobile firmware with Odin.
All the other tmobile and at&t cwm/twrp flashable zip file roms found in these threads don't contain
any bootloaders that's why they can be flashed on any unlocked and rooted tmobile or at&t phones.
Misterjunky said:
Nope, it won't lock or re-lock your phone, once a phone is unlocked properly it will stay that way
regardless which rom you flash and regardless if you're on the AT&T network or Tmobile network.
Do not Odin flash the AT&T stock firmware on a Tmobile phone even if it's unlocked.
If you do you will not be able to make or receive any phone calls.
You can flash AT&T or Tmobile CWM/TWRP flashable stock or custom zip file roms because
those do not contain the radio/modem images like the Odin flash firmware do.
If you odin flash back to stock Tmobile firmware you will loose root unless you re-root after flashing.
As far as bootloaders go, a Tmobile phone requires a Tmobile bootloader, but you don't need to worry
about that if you flash the stock official tmobile firmware with Odin.
All the other tmobile and at&t cwm/twrp flashable zip file roms found in these threads don't contain
any bootloaders that's why they can be flashed on any unlocked and rooted tmobile or at&t phones.
Click to expand...
Click to collapse
so the hardware is different is that why you cant flash att stock firmware with odin on a T-Mobile s4
re: locked/unlocked
[email protected] said:
so the hardware is different is that why you cant flash att stock firmware with odin on a T-Mobile s4
Click to expand...
Click to collapse
Exactly, the hardware is only a little different that's why we can use the cwm/twrp flashable zipfile custom
tmobile/at&t roms with either the tmobile locked or unlocked phones or the unlocked at&t phones.
The only exception is that wifi calling only works on an actual tmobile phone with a tmobile
sim card which is on the tmobile network whether it's locked or unlocked.
[email protected] said:
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right now my s4 is sim unlocked and im on at&t network
Click to expand...
Click to collapse
Misterjunky said:
The only exception is that wifi calling only works on an actual tmobile phone with a tmobile
sim card which is on the tmobile network whether it's locked or unlocked.
Click to expand...
Click to collapse
Don't think it matters if WiFi calling isn't enabled.
I thought the hardware between the AT&T s4 and the T Mobile s4 was the same. I thought the reason they received different radio frequencies was in the firmware and not the hardware can anyone confirm ..
I wanted to try to flash AT&T stock firmware on my t-mobile s4 for better performance on AT&T network
[email protected] said:
I thought the hardware between the AT&T s4 and the T Mobile s4 was the same. I thought the reason they received different radio frequencies was in the firmware and not the hardware can anyone confirm ..
I wanted to try to flash AT&T stock firmware on my t-mobile s4 for better performance on AT&T network
Click to expand...
Click to collapse
I would love the answer to this question too.
The key is the Modem aka Baseband. This is the Radio file and it is hardware and carrier dependent. If you try to flash this you will mess up the bootloader and radio and you have a brick.
I'm too on AT&T network with T-Mobile phone. I'm using the stock MDL radio and it's working fine. I don't notice a difference between the 2 devices on LTE network. if T-Mobile can't lock on to LTE network, AT&T S4 won't either.
sorry to slightly threadjack.... but does that mean if i flash a custom s4 AT&T rom (i.e. "CleanRom"), i will still be going through a Tmobile bootloader \ kernal etc..?
Is there any foolproof way to "convert" an tmobile s4 to an ATT based s4?
Can't you guys just flash a popular custom rom for sgh-i337 variant and then change the radioband (or whatever it's called) sh*t manually? If you ever flash another carrier rom, make sure ur baseband is the original carrier/phone as stated before. And flash ur carrier/phone kernel(custom or stock, doesn't matter) as well.
I believe these ppl created this topic because they want the stock carrier branded firmware on their phone, so that they can have all the carrier specific features on their phone. Third party ROM is not their choice, otherwise there are tones post out there already. I believe someone must be brave enough to flash it to their phone to test that, otherwise, there is no good answer to that.
Cal-El said:
The key is the Modem aka Baseband. This is the Radio file and it is hardware and carrier dependent. If you try to flash this you will mess up the bootloader and radio and you have a brick.
Click to expand...
Click to collapse
Hi guys, anyone can tell me if this will work:
I have TMO M991 and I want to use it in Europe but have problem with network signal (not registered on network; missed calls & s... like that).
My guess is that radio is different and optimized for LTE, which we dont have here...
I m thinking of flashing I9505 stock rom and baseband...what do You think, will this improve radio reception/stable network signal?
I9505 is the version used in Europe region...
I honestly tried to find similar topics, no luck so far so pls point me in the right direction if nothing else...
Cheers!

Verizon Note 8...T-Mobile sim - help

Hello all, new here and I just purchased a Note 8 from Verizon. The device is paid off fully and i wish to use my T-Mobile simcard in it but it does not seem to be picking up a signal. I did update the verizon software to the latest version when i had my verizon sim card inserted. Verizon customer service told me i need to reset to factor setting then my t-mobile sim should work but this has not helped.
How can i get my t-mobile sim to work? Any help appreciated as i am new to android phones!
Thanks
Hi there, you must flash the new N950U1 2BQK1 or N950U 2BQK2 stock firmware to have full access of T-MOBILE Network. It's the only way it will work, I have AT&T NOTE 8 working on Verizon network with zero problem.
---------- Post added at 02:35 PM ---------- Previous post was at 02:31 PM ----------
It's a very easy process to flash the 4 US Carriers firmware, I have done it more than 50 times and I'm not a developer.
kdecoteau1 said:
Hi there, you must flash the new N950U1 2BQK1 or N950U 2BQK2 stock firmware to have full access of T-MOBILE Network. It's the only way it will work, I have AT&T NOTE 8 working on Verizon network with zero problem.
---------- Post added at 02:35 PM ---------- Previous post was at 02:31 PM ----------
It's a very easy process to flash the 4 US Carriers firmware, I have done it more than 50 times and I'm not a developer.
Click to expand...
Click to collapse
I would like to know where to get the firmware and with what do you flash it with? Is there a instructions thread or link.
It's been over 5 years since I have tinkered with a Samsung device.
Hi there. You'll need to have your Note 8 Bootloader version on level 2, meaning 2BQK2, 2BQJA or anything with 2 before the last 4 digits.
1) tmobile SIM card in device
2) Odin v3.12.7 make sure extract
3) 2BQK2 firmware extract all files
4) put all 4 set of firmware files in the right manner, bl,ap,cp and csc. Don't used home-csc only CSC.
Odin and firmware https://androidfilehost.com/?fid=673791459329067572 2BQK2
https://androidfilehost.com/?fid=962157660013069130 2BQL5
https://drive.google.com/open?id=1bRz4RQzmloSgsuYmyLu92cktT_f8hIYp
Unlock firmware
1) any carrier SIM card
2) Odin v3.12.5 Prince Comsey or modified Odin, make sure extract
3) 2BQK1 firmware, extract all files.
4) put all 4 set of firmware files in the right manner, bl,ap,cp and csc. Don't used home-csc only CSC
Odin and firmware https://androidfilehost.com/?fid=745849072291691586 2BQK1
https://androidfilehost.com/?fid=817906626617955896 2BQL2
https://drive.google.com/open?id=1Lw79Q5npvMRdME33-ioqy692ClZ36n4U
First instructions is for if you want stock US CARRIER BLOATWARE FIRMWARE, second instructions is if you want SAMSUNG STOCK FIRMWARE. Follow steps and everything will be fine, happy flashing.
So wait, I have a Verizon Note 8 (currently using MetroPCS perfectly), but I wanted a stock Samsung ROM (without the Verizon crap on it), I can just flash the second set of files instead and done with it?
Yes
Can I use a gsm sim card and a verizon sim card at the same time on verizon branded phone? I see you have to flash the firmware above but am wondering if this would help me.
So much misinformation in this thread.
I don't even know where to start:
The OP was asking why his T-Monile SIM wouldn't work. It doesnt matter which firmware you're on, if the Note 8 is unlocked (the Verizon Note 8 IS unlocked), and it has a clean IMEI, and your SIM is already activated, then it will get 4G LTE. I know. I have a Verizon Note 8, and use it on Tmobile. I used it for over 24 hours with my T-Mo SIM but running thr Verizon firmware with no issues. Only reason I flashed T-Mobile firmware was to rid myself of Verizon bloat and to get wifi calling.
As far as bootloader, that has no effect on the SIM card working. The OP would need a v2 bootloader firmware if his current firmwarealso had the v2 bootload. It probably does, so thats a moot point, but the implication was the v2 bootloader was the only one that would make his SIM work.
I hope the OP got it all figured out.
mmdpkaaa said:
Hello all, new here and I just purchased a Note 8 from Verizon. The device is paid off fully and i wish to use my T-Mobile simcard in it but it does not seem to be picking up a signal. I did update the verizon software to the latest version when i had my verizon sim card inserted. Verizon customer service told me i need to reset to factor setting then my t-mobile sim should work but this has not helped.
How can i get my t-mobile sim to work? Any help appreciated as i am new to android phones!
Thanks
Click to expand...
Click to collapse
If you want T-Mobile to work best follow the switching carrier guide to change CSC code to TMB and then flash the Latest T-Mobile Firmware...
https://forum.xda-developers.com/showpost.php?p=74087340&postcount=1
unitop4 said:
Can I use a gsm sim card and a verizon sim card at the same time on verizon branded phone? I see you have to flash the firmware above but am wondering if this would help me.
Click to expand...
Click to collapse
No way to dual SIM US models without trying to modify the SIM tray...and some have damaged trying to...
BlueFox721 said:
If you want T-Mobile to work best follow the switching carrier guide to change CSC code to TMB and then flash the Latest T-Mobile Firmware...
https://forum.xda-developers.com/showpost.php?p=74087340&postcount=1
No way to dual SIM US models without trying to modify the SIM tray...and some have damaged trying to...
Click to expand...
Click to collapse
plus the second SIM wouldn't have an IMEI assigned to it.
And I agree the OPs best bet is to flash thr T-Mobile firmware. But his issue was he wasnt getting a signal at all with his T-Mo SIM. Flashing firmware won't fix that. Source: I have a VZW Note 8 on T-Mo. Used it with the VZW firmware and a T-Mo SIM with no issues.
Mr. Orange 645 said:
plus the second SIM wouldn't have an IMEI assigned to it.
And I agree the OPs best bet is to flash thr T-Mobile firmware. But his issue was he wasnt getting a signal at all with his T-Mo SIM. Flashing firmware won't fix that. Source: I have a VZW Note 8 on T-Mo. Used it with the VZW firmware and a T-Mo SIM with no issues.
Click to expand...
Click to collapse
Another user had SIM issues and flashed back to factory (theirs was unlocked) then changed carriers and SIM worked again...sometimes a clean flash can work...
Hi all. For me I flash all firmware at clean wipe, never any issues. I have an unlock AT&T Note 8 unlock running the latest Verizon firmware with VZW SIM active. I also have a t-mobile S8+ unlock and running the latest U1 firmware and working with Verizon SIM active. I constantly switch my firmware between tmobile, verizon and at&t to see performance and what ever else feature added.
kdecoteau1 said:
Hi all. For me I flash all firmware at clean wipe, never any issues. I have an unlock AT&T Note 8 unlock running the latest Verizon firmware with VZW SIM active. I also have a t-mobile S8+ unlock and running the latest U1 firmware and working with Verizon SIM active. I constantly switch my firmware between tmobile, verizon and at&t to see performance and what ever else feature added.
Click to expand...
Click to collapse
How did you get ATT N8 to work on VZW? I flashed my Tmo to VZW and i could never get speeds above 1mpbs. Even with unlocked firmware it did not get anywhere with VZW. I heard that its because the IMEI is not in VZWs database.
Hi there. My AT&T Note 8 works great on Verizon network, it's running the latest N950U1 Firmware 2BQL2, everything works great. It will work good on T-Mobile too, lately tmobile network giving trouble, sometimes less than 1 mbps on download. Since June 2017 I been having trouble with tmobile network in my area and around, so I switch to Verizon, couldn't bother the crappie service. My location I get 215 mbps on my note 8, IPhone 8 plus 147mbps download. I prefer Tmobile but it's not working good in area anymore.
[/COLOR]
Mr. Orange 645 said:
plus the second SIM wouldn't have an IMEI assigned to it.
And I agree the OPs best bet is to flash thr T-Mobile firmware. But his issue was he wasnt getting a signal at all with his T-Mo SIM. Flashing firmware won't fix that. Source: I have a VZW Note 8 on T-Mo. Used it with the VZW firmware and a T-Mo SIM with no issues.
Click to expand...
Click to collapse
@Mr. Orange 645
I currently have a Verizon Note 8 with a TMO SIM and I'm getting 4GLTE but a few problems. Most of the incoming calls forward to voicemail and all outgoing calls the data has to drop completely before the call can connect. Will doing the carrier switching updates listed in the link above as well as flashing T-Mobile firmware assist with this problem? The phone is on 2BQK2 currently.
Pastor X said:
[/COLOR]
@Mr. Orange 645
I currently have a Verizon Note 8 with a TMO SIM and I'm getting 4GLTE but a few problems. Most of the incoming calls forward to voicemail and all outgoing calls the data has to drop completely before the call can connect. Will performing the carrier switching updates listed in the link above as well as flashing T-Mobile firmware assist with this problem? The phone is on 2BQK2 currently.
Click to expand...
Click to collapse
Nevermind, I fixed it. I had to perform the carrier switch and flash Tmo's firmware. Running perfectly!
Pastor X said:
[/COLOR]
@Mr. Orange 645
I currently have a Verizon Note 8 with a TMO SIM and I'm getting 4GLTE but a few problems. Most of the incoming calls forward to voicemail and all outgoing calls the data has to drop completely before the call can connect. Will doing the carrier switching updates listed in the link above as well as flashing T-Mobile firmware assist with this problem? The phone is on 2BQK2 currently.
Click to expand...
Click to collapse
Omg exacly whats happening to me? So what steps have you guys followed? Should I switch to T-mobile, or to factory unlocked?
I have Verizon phone, unlocked, and I use T-mobile sim card.
I would appreciate the help
Sent from my SM-N950U using Tapatalk
Verizion note8 with tmobile sim card
This is what happened when I changed carriers from the original verizon note8, on verizon network, with verizon sim and the most recent verizon pie update, to a carriers sim, that is tmobile service. And what happens, I didn't even think was possible... I put the new carriers sim in, truconnect, booted and let the phone register the new sim and network. Checked for update.... the was one, let the phone download and update. And you know how Verizon's boot logo is... it wasn't anymore. Booted the tmobile boot logo and sounds, strange. I'm not super noob and the little bit of knowledge and experience that I do have with roms and updates across carriers usually require physically flashing the rom. Correct me if I'm mistaking. Continuing.... optimizing apps....., huh?! The update flashed the tmobile software, without effecting any personally installed apps. Though the update did remove all the verzion software/bloatware, without permissions, and installed tmobile apps. 2 that are meant for user usage. They are tmobiles device unlock and the tmobile app. Which I might add, do not function, I surmise, because in not on the actual main tmobile network, but a scabbed on. I have never seen or experienced anything of the short. Please tell me if this is normal.? I was a bit upset. I did not give any carrier the permission to delete or install any app on my phone. But maybe things have changed since I dabbled. And If they have, maybe this might help the people that have been using Odin to get tmobile version rom while originally being a verzion phone. I dont think it's normal. Please tell me if this has happened to you.

Possible to change n975ui to n975u?

I flashed att firmware on an unlocked note 10 plus but att still sees it as an unlocked phone. Is it possible to change the phone to completey read as an attvbranded model? I called to see if they could provision the IMEI of my phone and they were able to tell right away it was not one of theirs, even though it was running att firmware.
Nikkic87 said:
I flashed att firmware on an unlocked note 10 plus but att still sees it as an unlocked phone. Is it possible to change the phone to completey read as an attvbranded model? I called to see if they could provision the IMEI of my phone and they were able to tell right away it was not one of theirs, even though it was running att firmware.
Click to expand...
Click to collapse
No, because (as you found out) the IMEI number is not from an AT&T branded phone.
Nikkic87 said:
I flashed att firmware on an unlocked note 10 plus but att still sees it as an unlocked phone. Is it possible to change the phone to completey read as an attvbranded model? I called to see if they could provision the IMEI of my phone and they were able to tell right away it was not one of theirs, even though it was running att firmware.
Click to expand...
Click to collapse
I have a GOOGLE unlocked phone. I flashed N975U firmware on my phone and also flashed ATT USER DATA at the same time.. When my phone booted up - it had all of the ATT BLOAT that comes on an Att phone - it booted up with the ATT LOGO - it shows ATT ICONS in the Status Bar for Data (5GE instead of showing LTE or 4G) and I have Wifi Calling and Video Calling working on my phone...
https://androidfilehost.com/?w=files&flid=301224
That is all it took. I didn't have to call ATT - It all just worked - and it was not working that way BEFORE I flased Userdata.
YMMV but I have heard about others who had the same experience. Go tot he N975U Firmware thread and find the download for ATT USERDATA - That is where I found it....
Hope that helps you.....
Pixel and iPhones are supposedly able to do those things. I think that may be why it worked for you
Geekser said:
I have a GOOGLE unlocked phone. I flashed N975U firmware on my phone and also flashed ATT USER DATA at the same time.. When my phone booted up - it had all of the ATT BLOAT that comes on an Att phone - it booted up with the ATT LOGO - it shows ATT ICONS in the Status Bar for Data (5GE instead of showing LTE or 4G) and I have Wifi Calling and Video Calling working on my phone...
https://androidfilehost.com/?w=files&flid=301224
That is all it took. I didn't have to call ATT - It all just worked - and it was not working that way BEFORE I flased Userdata.
YMMV but I have heard about others who had the same experience. Go tot he N975U Firmware thread and find the download for ATT USERDATA - That is where I found it....
Hope that helps you.....
Click to expand...
Click to collapse
Do you know of any way to get them to recognize the IMEI as one of theirs?
scottusa2008 said:
No, because (as you found out) the IMEI number is not from an AT&T branded phone.
Click to expand...
Click to collapse
Nikkic87 said:
Do you know of any way to get them to recognize the IMEI as one of theirs?
Click to expand...
Click to collapse
Wish it was possible, but unfortunately no way exists.
If you have WiFi Callling, Video Calling and Volte working, why does it matter if ATT recognizes your phone as one of theirs or not? Just curious about what you are trying to accomplish ?

Question before purchase Note 10+

Samsung website have note 10+ $200 off and free buds. I want to purchase the unlocked model.
1. Is it simple as get the device then stick in tmobile sim? Or there is additional step to do.
2. I going to be travel to Asia within a month or so, i can use phone for sim from oversea correct?
3. Is unlocked model have wifi calling, volte?
I should get mine Tue or Wed, I'm on ATT, I plan on just trying my SIM card...I'll try to remember to report back later in the week..
Thank, I will wait for your answer. I heard from the other post that some feature won't work with tmobile? I don't plan to root or anything
OxyEthane said:
Samsung website have note 10+ $200 off and free buds. I want to purchase the unlocked model.
1. Is it simple as get the device then stick in tmobile sim? Or there is additional step to do.
2. I going to be travel to Asia within a month or so, i can use phone for sim from oversea correct?
3. Is unlocked model have wifi calling, volte?
Click to expand...
Click to collapse
1.) - Yes it is that simple and it does work. I had done it with the U1 firmware and had no issues. If you want to ensure full compatibility (and video calling) then you will wanna consider flashing the Tmobile carrier firmware. Flashing carrier firmware onto the phone will not have any impact on the network/sim unlock status (in case if your wondering).
2.) - You will have to ask the carrier your going to use in Asia if it will be supported. Since the unlocked model has no sim/carrier lock on it you can use it with any provider that supports the phone.
3.) - Yes and No, depending on the carrier. Tmobile has been the most compatible with BYOD devices so yes to most of that. AT&T on the other hand not so much so, as they only provision things like WiFi calling, VOLTE, etc. on phones they have sold. Some people have tried to find work arounds to this AT&T restriction, so YMMV.
In Tmobile's case if I remember correctly WiFi calling should work just fine and VOLTE will. You may need to setup the APN manually, or at least make sure it is set up properly. Another option (and one I did to get video calling to work) is flashing the the firmware from Tmobile for the SM-N975U to ensure full carrier compatibility.
What do you mean full compatibly video call, isnt video go with facebook messenger or depend on apps?
I don't have to root in order to flash, right?
Is there any current issues that I need to know?
Is it worth get 5g at all?
Is there any guide or video guide to flash tmobile carrier firmware to note 10 plus unlocked? Please answer asap so i can purchase phone soon
OxyEthane said:
What do you mean full compatibly video call, isnt video go with facebook messenger or depend on apps?
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Hopefully this will clear up any misunderstanding..
My reply was referring to carrier features and nothing more.
When I says "full compatibility" I mean any specific customization or tweaks the carrier makes to the firmware they release for the network they run. These tweaks would not be fully (or mostly) present on the U1 firmware. For example U1 firmware may not get the best speed or signal strength as opposed to the carrier released U firmware.
When I say "video calling" I am talking about starting a video call from the dialer app (same one you use to dial a random number on the telephone). This would not be present on the U1 firmware.
OxyEthane said:
I don't have to root in order to flash, right?
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Click to collapse
No
OxyEthane said:
Is there any current issues that I need to know?
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Click to collapse
No.. but I would suggest that you do some google searches and read up on how to do this. This way you have an understanding on what you will need odin for and how to use it.
OxyEthane said:
Is it worth get 5g at all?
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IMHO in the USA I wouldn't just yet.. Not unless you want the shiny shiny to show off to your friends. It's not widely available and once it is I would still wait for them to work out all the kinks before spending the extra money. The LTE speeds I get as it is are sufficient enough for what I do, but eventually I will end up getting 5G after it gets fully released and the carriers get it stabilized.
OxyEthane said:
Is there any guide or video guide to flash tmobile carrier firmware to note 10 plus unlocked? Please answer asap so i can purchase phone soon
Click to expand...
Click to collapse
Yes tutorials and videos are on the internet.
I would encourage you to put some effort into finding the answer. I will tell you that the steps to do this are the same for the S9+ and a person was just recently discussing flashing 975U firmware to the 975U1 firmware on this forum.
I wonder if this video good idea to follow
https://www.google.com/url?sa=t&sou...BMAJ6BAgHEAQ&usg=AOvVaw18C8vlQDueUAkGQjTDOMve
OxyEthane said:
I wonder if this video good idea to follow
https://www.google.com/url?sa=t&sou...BMAJ6BAgHEAQ&usg=AOvVaw18C8vlQDueUAkGQjTDOMve
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Click to collapse
It is pretty decent.. but here's a few more things you will want to do.
If you have a google account on the phone already be sure to factory data reset it to remove FRP lock.
If not already mentioned in the video use the CSC_*** file and not the home_csc file.
Flash the USERDATA file included with the tmobile firmware. You can easily see where to place the USERDATA file in tge odin flashing tool.
After you get done flashing the phone be sure to factory data reset it to ensure everything works (OTA, etc).

Flash att firmware to unlocked note 10+

Hey guys new to the forum. I have purchased an unlocked note 10+. I was wanting to flash ATT firmware to it so I could have wifi calling video calling etc.. Anyways I have tried this multiple times with no success. I have downloaded what I thought was the right firmware but it still boots up with the samsung logo. When I use odin it says PASS and everything. Can anyone help me out here..?
You need to start from a reset phone. start phone with att sim. it will provision phone and restart. THEN flash att firmware. should boot up to att logo.
jdg2002 said:
You need to start from a reset phone. start phone with att sim. it will provision phone and restart. THEN flash att firmware. should boot up to att logo.
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Click to collapse
So I need to start at the beginning with a factory reset phone with a att sim installed? Also could you tell me where and what firmware to download for Odin?
yes. start from fresh reset in unlocked phone. then you will need to enable "usb debugging" , flash att firmware. (in "guides, news, and discussion" a post by iBowToAndroid) That is what I did to flash att firmware on my unlocked note10+. WiFi calling still does not work, hopefully a call to att will fix this.
Unless the IMEI is within a series in the AT&T system, no amount of calls or fiddling with the firmware will enable it. Even if you manage to get the AT&T boot logo, your carrier features won't enable. I'm speaking from experience dating back to the Note 9 and as recently as attempting with my wife's Note 10 upgrade. If you have a non-AT&T branded device, it will not provision the carrier features. At best, they'll be enabled for a day or so, maybe until a restart.
Sent from my SM-N976U using Tapatalk
jdg2002 said:
yes. start from fresh reset in unlocked phone. then you will need to enable "usb debugging" , flash att firmware. (in "guides, news, and discussion" a post by iBowToAndroid) That is what I did to flash att firmware on my unlocked note10+. WiFi calling still does not work, hopefully a call to att will fix this.
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Click to collapse
Does video calling work?
ebarker92 said:
Does video calling work?
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As I stated above, it will not. At best, it'll work for a timeframe of hours to a few days (or until reboot).
Sent from my SM-N976U using Tapatalk

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