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I have read through many threads and I cannot find a direct answer. As it is stated in the title I have the Galaxy unlocked s9+that I bought from Samsung. I am currently on AT & T network because T-Mobile is terrible here in North Carolina where I am currently living. Can I flash ATT firmware on this unlocked version of the S9 plus and use Wi-Fi calling and volte? If there is a definite yes to this question then I will try to find the ATT firmware the flash on this phone.
uzupan said:
I have read through many threads and I cannot find a direct answer. As it is stated in the title I have the Galaxy unlocked s9+that I bought from Samsung. I am currently on AT & T network because T-Mobile is terrible here in North Carolina where I am currently living. Can I flash ATT firmware on this unlocked version of the S9 plus and use Wi-Fi calling and volte? If there is a definite yes to this question then I will try to find the ATT firmware the flash on this phone.
Click to expand...
Click to collapse
The answer is yes.
The firmware can be found pretty easy by looking in the forums or by looking on sammobile.com
Also, make sure you are flashing the same version of firmware. So if your device last digits are ARF4, then you want to flash the ARF4 AT&T firmware.
I have a question for this unlocked version from samsung.com. i I use it with Tmobile is the wifi calling, Volte, will work out of the box? or i have to do the same thing as flashing tmobile firmware? and also if I flash do i have to root? TIA. and also if there is already a thread for this question kindly post the link.
vaichrome said:
I have a question for this unlocked version from samsung.com. i I use it with Tmobile is the wifi calling, Volte, will work out of the box? or i have to do the same thing as flashing tmobile firmware? and also if I flash do i have to root? TIA. and also if there is already a thread for this question kindly post the link.
Click to expand...
Click to collapse
Yes if you use it on T mobile, the wifi, Volte will work out of the box. I was on T Mobile but because of coverage I had to switch to Att.
Scott said:
The answer is yes.
The firmware can be found pretty easy by looking in the forums or by looking on sammobile.com
Also, make sure you are flashing the same version of firmware. So if your device last digits are ARF4, then you want to flash the ARF4 AT&T firmware.
Click to expand...
Click to collapse
thanks for the info. I will give it a try!
uzupan said:
thanks for the info. I will give it a try!
Click to expand...
Click to collapse
FYI Sammobile requires premium account for fast download and with free account download speed is throttled to 15kbps. Try https://updato.com/firmware-archive-select-model for the firmwares with fast download.
Cashreedhar said:
FYI Sammobile requires premium account for fast download and with free account download speed is throttled to 15kbps. Try https://updato.com/firmware-archive-select-model for the firmwares with fast download.
Click to expand...
Click to collapse
Thanks
Well, I got the AT & T firmware put on my Galaxy 965 you one but since I am on ATT prepay Wi-Fi calling does not work and they do not offer volte on ATT prepaid, what a bummer
uzupan said:
Yes if you use it on T mobile, the wifi, Volte will work out of the box. I was on T Mobile but because of coverage I had to switch to Att.
Click to expand...
Click to collapse
thank you so much. that will help me decide what to get.
uzupan said:
Well, I got the AT & T firmware put on my Galaxy 965 you one but since I am on ATT prepay Wi-Fi calling does not work and they do not offer volte on ATT prepaid, what a bummer
Click to expand...
Click to collapse
Since this is an unlocked phone not purchased from ATT, WiFi calling and other features wont work even on a regular post pay account. I had to call ATT and give them my IMEI from my previous ATT branded s8+ before wifi calling and smart caller ID and other features would work. I told them it was an ATT phone that i purchased at Best Buy and i read about WiFi calling problem in a forum and that using a different IMEI worked for others. The tech said it's worth a try and she changed it and ive been good to go ever since. I fumbled around the question of "is this an unlocked phone?" i said no, it has ATT logo (it does at boot, but not on the back lol) and i purchased it for ATT. That was good enough for them.
Many others with unlocked U1 phones have done the same thing and ATT has changed IMEI on their side. It doesnt change your phones physical IMEI, just their end. I saw a post where one operator said they wouldnt or couldnt do that. If they tell you no, call back you'll likely get a different person and they might change it. Main thing is you have to have an IMEI from an ATT branded phone that supports the same features (s8,s7,s6, etc) Luckily for me i have a like new s8+. It's worth much more than what they offer for trade in so i kept it. Glad i did.
Yes, I saw those posts as well but currently I do not have an ATT branded phone. So, I went and put the unlocked firmware back on the phone and I will just keep it the way it is. If the new iPhone that is coming out has the T-Mobile band 71, I probably will jump back to the iPhone. This was my first Android in about 4 years. I am kind of disappointed that it won't work.
Hello - I've been trying to research how I can get Wifi calling enabled on my 965F but I get all kinds of twisted up with all the different model numbers and lingo of flashing ROM's so I'm hoping something might be willing to point me in the right direction. I have a brand new S9+ 965F model with the Exynos processor on T-Mobile US. The Wifi calling option is missing which I did not expect but after reading is not unusual. I keep reading about needing to flash a particular ROM in order for it to be enabled - something about XEU or U1 perhaps? I'm of course a bit worried about turning the phone into a brick but I'm willing to take a reasonable risk to get Wifi calling unlocked.
Can anyone help? I would really appreciate it!
I have an ATT one with snapdragon, looking for the same, enable WIFI calling mine is a G9650
Same issue
Hey Mate,
Have you find a solution for your problem? Got the same issue with my G965f/DS. Moved to US and Wifi Calling wont work on TM and ATT. I've even tested on smaller providers and still same problem. I travel a lot and need Wifi Calling when I'm abroad.
Please, let me know if you guys have any solution for this problem.
Thank you,
Unfortunately I ended up returning the phone. After hours of digging the bottom line I believe is that there is no carrier profile for US carriers in this version of the phone and then I think the next issue is it doesn't support the proper bands. I ended up getting the OnePlus 6T instead.
I read flashing a ROM from a country with VoLTE and Wifi calling enabled, lets you see the settings.
I have an s9+ from UAE and I'm waiting for Pie release on INS ROM (India) to flash it and see if it works in my country (Argentina)
Sent from S.G. S9+ Duos
I'm in the same boat, no knowledge of if or when WiFi calling will be available for unlocked phones. Just a shame that such an important feature that worked on my old iPhone 6 isn't available in a supposed "flagship" product. That's just really shoddy workmanship.
Wifi calling is enabled for Verizon (go to phone settings to enable). I am sure there
are other changes. Update G965U1UEU3ARH7.
fb
Hi, just posted the same update for GS9 Unlocked using AT&T. 495.78 MB.
Thanks for sharing... View attachment 4598513
Sent from my SM-G960U1 using Tapatalk
fbroce said:
Wifi calling is enabled for Verizon (go to phone settings to enable). I am sure there
are other changes. Update G965U1UEU3ARH7.
fb
Click to expand...
Click to collapse
Yes, and Secure Wi-Fi has now been added. I think it previously existed only on the European firmwares. Now we get it, too.
Any way to see if AT&T Wifi Calling will work as I do not see the option in Settings? I have US Unlocked GS9 on AT&T
If I flash this U1 for my ATT phone (running full Tmobile firmware now),
will I have Wifi calling with Tmobile? Or Wifi calling only works with Verizon with U1
sweetboy02125 said:
If I flash this U1 for my ATT phone (running full Tmobile firmware now),
will I have Wifi calling with Tmobile? Or Wifi calling only works with Verizon with U1
Click to expand...
Click to collapse
Despite what the websites like to post, there really isn't a VZW U1 and an ATT U1. There's just XAA U1. You'll get Wi-Fi Calling on every carrier with it now, except for ATT.
maddie01 said:
Any way to see if AT&T Wifi Calling will work as I do not see the option in Settings? I have US Unlocked GS9 on AT&T
Click to expand...
Click to collapse
Reading up on it (short summary) this is because AT&T uses a database of IMEI numbers to provision WiFi calling and VoLTE. Since our IMEI numbers from our phones are not in that database we won't be able to use WiFi calling or VoLTE.
Makes sense but is ridiculous for AT&T to restrict it. Has anyone ever called to ask to have thier Unlocked IMEI added to this "list" so that these features will work? Seems like it is a disadvantage for AT&T if it works for TMo and now Verizon but not AT&T...?
Just curious...
Sent from my SM-G960U1 using Tapatalk
maddie01 said:
Makes sense but is ridiculous for AT&T to restrict it. Has anyone ever called to ask to have thier Unlocked IMEI added to this "list" so that these features will work? Seems like it is a disadvantage for AT&T if it works for TMo and now Verizon but not AT&T...?
Just curious...
Sent from my SM-G960U1 using Tapatalk
Click to expand...
Click to collapse
It's odd for sure. Verizon has always had VoLTE on unlocked too. At least since the S7. Probably before that. ATT has never felt the need to change the policy.
maddie01 said:
Makes sense but is ridiculous for AT&T to restrict it. Has anyone ever called to ask to have thier Unlocked IMEI added to this "list" so that these features will work? Seems like it is a disadvantage for AT&T if it works for TMo and now Verizon but not AT&T...?
Just curious...
Sent from my SM-G960U1 using Tapatalk
Click to expand...
Click to collapse
Who can say if it's disadvantageous or not, for all we know it might be the technology differences between the networks. Also it does make sense... having specific IMEI numbers known to connect to carrier specific services like wifi calling and VoLTE ensures that everything works. It doesn't make it convenient for us and I will admit it would be nice to have the features.. but for calling via wifi there are options.
Personally I use pbx in a flash and bria softphone. With the right VoIP provider it's a good setup and doesn't break the bank at all. I haven't even spent more then 5 bucks maybe in a month. For me this is better then wifi calling and I don't have any problems.
As for adding our IMEI to that database I tried inquiring about it, but I do recall reading where some people may have had luck in doing this. I suspect it may require a bit of luck and/or perserveriance after my last discussion with AT&T customer service.
I explained the situation and what needed to be done while being placed on hold a few times. As the call continued I tried to be patient with the person I spoke too, but I admit it is not easy when he is saying that just because I see H data speed that it's actually VoLTE. When I mentioned the speed test and how it was H data speed (and that H data speeds are not VoLTE) he was saying that H data speeds were like blazing fast compared to LTE..
I had to politely finish the call before I either started to laugh or feel sorry for that rep.
scottusa2008 said:
I tried inquiring about it, but I do recall reading where some people may have had luck in doing this. I suspect it may require a bit of luck and/or perserveriance.
In my case I tried to be patient with the person I spoke too. After waiting on hold a few times the representative tried to say everything was normal.. and then proceeded but to say that just because I see H+ speed that it's actually VoLTE. When I mentioned the speed test and how it was H data speed (and that H data speeds are not VoLTE) he was saying that H data speeds were like blazing fast compared to LTE..
I had to politely finish the call before I either started to laugh or feel sorry for that rep.
Click to expand...
Click to collapse
Hahaa, i have had a similar situations in the store where i had to correct a worker that was completely explaining 3G/HSPA wrong. Incredible how incompetent they are unless you just want an iPhone...thanks
Sent from my iPad using Tapatalk
maddie01 said:
Makes sense but is ridiculous for AT&T to restrict it. Has anyone ever called to ask to have thier Unlocked IMEI added to this "list" so that these features will work? Seems like it is a disadvantage for AT&T if it works for TMo and now Verizon but not AT&T...?
Just curious...
Click to expand...
Click to collapse
The only thing I've seen some people do successfully to get VoLTE working on an unbranded unlocked device is to have AT&T provision a SIM card to an IMEI of a phone that is AT&T branded and capable of VoLTE. Then use that SIM card on the unbranded unlocked device.
guyd said:
The only thing I've seen some people do successfully to get VoLTE working on an unbranded unlocked device is to have AT&T provision a SIM card to an IMEI of a phone that is AT&T branded and capable of VoLTE. Then use that SIM card on the unbranded unlocked device.
Click to expand...
Click to collapse
Do you recall seeing if they said this work for prepaid and/or postpaid?
If it's that simple i'm gonna have to find a phone capable of VoLTE and see if this works
scottusa2008 said:
Do you recall seeing if they said this work for prepaid and/or postpaid?
If it's that simple i'm gonna have to find a phone capable of VoLTE and see if this works
Click to expand...
Click to collapse
Honestly don't recall, or if it was even mentioned.
So this new version includes wifi calling. You find this in the menu system somewhere? Does HD Voice also work and indicated like Verizon SM-G965U?
houston-tx said:
So this new version includes wifi calling. You find this in the menu system somewhere? Does HD Voice also work and indicated like Verizon SM-G965U?
Click to expand...
Click to collapse
Hd voice always worked on unlocked for Verizon. Wifi calling is found in the phone app's settings.
I flashed G965U1UES3ARI1 for XAA to SM-G965U1 and I can't find settings for Wifi calling. Are they visible or just built in and assumed to be there?
houston-tx said:
I flashed G965U1UES3ARI1 for XAA to SM-G965U1 and I can't find settings for Wifi calling. Are they visible or just built in and assumed to be there?
Click to expand...
Click to collapse
What carrier are you on? It's supported for SPR, TMB, and now VZW. Look in the settings of the actual phone app, not the device settings.
Verizon. Found it. Thought it was in Settings. Thank you!
houston-tx said:
Verizon. Found it. Thought it was in Settings. Thank you!
Click to expand...
Click to collapse
No problem. You're not the first person to look for it in the wrong place. U1 builds always place the setting there. So they stayed consistent doing it this way.
Since the Galaxy S6 Edge days I've been getting AT&T branded Samsung phones. This time around due to initial perks of a trade in were better for the unlocked version of S23U, I went ahead and pre-ordered the unlocked version. Are there any drawbacks anyone has experienced with the unlocked version that would warrant me to cancel the order? Are there any AT&T features such as visual voicemail, personal hotspot or HD voice that isn't compatible with the unlocked, non carrier version? Any help would be appreciated as i believe I can still cancel the order.
Thank you.
With an unlocked phone, you cant call. But if you add a sim card into it you can do anything such as mobile data, call, hotspot, etc. An unlocked phone can work on any carrier. But it is still the same thing as an at&t version unless you add the sim card in it.
So I assumed if i insert my AT&T simcard it'll work just like an AT&T phone?
AeroSatan said:
So I assumed if i insert my AT&T simcard it'll work just like an AT&T phone?
Click to expand...
Click to collapse
That's what I have done for every phone I have had since the S7 Edge on T-Mobile. Still using the same simcard since I started out with the (S7 Edge), then Note 8, S20U, S22U and now S23U and has worked fine with T-Mobile but without the carrier bloat. The only downside is Unlocked versions always get the updates last.
You can always flash U (carrier firmware) that is bit different from from U1 (factory unlocked) firmware. This way you'll get exactly the same experience as for the phone of any carrier directly. You can always switch back and forth with data wipe.
AeroSatan said:
So I assumed if i insert my AT&T simcard it'll work just like an AT&T phone?
Click to expand...
Click to collapse
yes. and sorry for the late reply.
irshansk said:
You can always flash U (carrier firmware) that is bit different from from U1 (factory unlocked) firmware. This way you'll get exactly the same experience as for the phone of any carrier directly. You can always switch back and forth with data wipe.
Click to expand...
Click to collapse
First time Sammy user here, so possibly a stupid question but... from my search it appears that other than carrier bloatware you don't loose anything by going to U1 firmware and possibly gain faster updates. Is that a correct? Seems to be the case for WiFi calling but what about ATT wifi hotspots for example?
Unlocked phones were useful for sticking local SIMs in them for international travel but with the new international plans pricing is actually reasonable so it is not worth the hassle.
AeroSatan said:
Since the Galaxy S6 Edge days I've been getting AT&T branded Samsung phones. This time around due to initial perks of a trade in were better for the unlocked version of S23U, I went ahead and pre-ordered the unlocked version. Are there any drawbacks anyone has experienced with the unlocked version that would warrant me to cancel the order? Are there any AT&T features such as visual voicemail, personal hotspot or HD voice that isn't compatible with the unlocked, non carrier version? Any help would be appreciated as i believe I can still cancel the order.
Thank you.
Click to expand...
Click to collapse
I was in the same situation as you, and ordered the Unlocked version this time instead of the AT&T version. I am happy to report that everything is working. Visual Voicemail (Samsungs App), Personal Hotspot (aka Mobile Hotspot), HD Voice (VoLTE), and WiFi Calling.
Hi Everyone,
Need help. I recently migrated to Canada and I brought my S23 Ultra with me (Open Line: CSC:XTC). I noticed that I'm only getting a 4G+ signal and VoLTE is not enabled. I check Rogers 5G coverage and our area is part of it. I tried inserting my sim to my wife's Iphone and it is getting a 5G signal. Can this be fixed?
Condolences on your move from a fellow Canadian
Are you sure the phone has the correct LTE bands (it probably does...).
Secondly, the Canadian telecom cartel has colluded and decided that they don't like phones sold elsewhere or imported...you could be SOL as I don't see Robbers authorizing your IMEI.
Apple is not caving in to carriers, that's why the iPhone works just fine.
I doubt that changing the CSC will help, as the restrictions are placed on IMEI.
Ipse_Tase said:
Condolences on your move from a fellow Canadian
Are you sure the phone has the correct LTE bands (it probably does...).
Secondly, the Canadian telecom cartel has colluded and decided that they don't like phones sold elsewhere or imported...you could be SOL as I don't see Robbers authorizing your IMEI.
Apple is not caving in to carriers, that's why the iPhone works just fine.
I doubt that changing the CSC will help, as the restrictions are placed on IMEI.
Click to expand...
Click to collapse
For real? I can understand if they won't allow VoLTE (which they should) but not being able to get a 5G signal is just plain BS.
Btw, what do you mean by SOL?
bashblues said:
For real? I can understand if they won't allow VoLTE (which they should) but not being able to get a 5G signal is just plain BS.
Btw, what do you mean by SOL?
Click to expand...
Click to collapse
sh!t out of luck.
The issue is the CSC - if you are able to get the Rogers CSC working it should allow you to access 5G/VoLTE (possibly VoWiFi - Rogers allows 3rd party devices as long as the config files are correct - only Bell/Telus have an IMEI whitelist).
lexcyn said:
The issue is the CSC - if you are able to get the Rogers CSC working it should allow you to access 5G/VoLTE (possibly VoWiFi - Rogers allows 3rd party devices as long as the config files are correct - only Bell/Telus have an IMEI whitelist).
Click to expand...
Click to collapse
I already tried but Rogers CSC is not on the list. Is there any chance I can still change it to Rogers CSC?
Is it enabled in the *#*#4636#*#* menu?
xNotta said:
Is it enabled in the *#*#4636#*#* menu?
Click to expand...
Click to collapse
I can't access that menu. When I tried that in the dialer it calls the number and says please check the number etc2x....
bashblues said:
I already tried but Rogers CSC is not on the list. Is there any chance I can still change it to Rogers CSC?
Click to expand...
Click to collapse
What model is your phone? I would say you could try flashing to the W firmware but if you have an EU model phone it won't work... so I am not sure how you could get the correct CSC.
lexcyn said:
What model is your phone? I would say you could try flashing to the W firmware but if you have an EU model phone it won't work... so I am not sure how you could get the correct CSC.
Click to expand...
Click to collapse
It's the Philippine Variant.
Model: SM-S918B/DS
CSC: XTC (Openline)
bashblues said:
It's the Philippine Variant.
Model: SM-S918B/DS
CSC: XTC (Openline)
Click to expand...
Click to collapse
Yeah so I don't believe you can flash W model but I am unsure. You may be able to try out one of those CSC changing services though? Not 100% if they work.
what is your plan , I don't have 5G on rogers because I dont pay for this, but VoLTE should work ? VoWiFI works tho.
oVeRdOsE. said:
what is your plan , I don't have 5G on rogers because I dont pay for this, but VoLTE should work ? VoWiFI works tho.
Click to expand...
Click to collapse
It's Rogers Infinite Plan (Unlimited and has 5G). VoLTE is not showing but I tried calling over it and the Signal still 4G+ so I guess VoLTE is activated. My problem now is the 5G signal. Went to Wireless Wave (where I got the sim) but they can't figure it out as well. They gave me a number of the TechSupport they said maybe it is something that needs to be done backend.
bashblues said:
It's Rogers Infinite Plan (Unlimited and has 5G). VoLTE is not showing but I tried calling over it and the Signal still 4G+ so I guess VoLTE is activated. My problem now is the 5G signal. Went to Wireless Wave (where I got the sim) but they can't figure it out as well. They gave me a number of the TechSupport they said maybe it is something that needs to be done backend.
Click to expand...
Click to collapse
I'm wondering if maybe some bands are just hidden for our 5G? Did you try the how to guide on how to unlock all bands? If you are able to get access into the service mode you might be able to do it: https://forum.xda-developers.com/t/...23-series-including-sub-6-and-mmwave.4554611/
bashblues said:
It's Rogers Infinite Plan (Unlimited and has 5G). VoLTE is not showing but I tried calling over it and the Signal still 4G+ so I guess VoLTE is activated. My problem now is the 5G signal. Went to Wireless Wave (where I got the sim) but they can't figure it out as well. They gave me a number of the TechSupport they said maybe it is something that needs to be done backend.
Click to expand...
Click to collapse
That's still better than being on Telus. My data drops down to H+ when I make a call and the call quality on 3G is terrible in an area of Toronto dominated by highrises.
jcsww said:
That's still better than being on Telus. My data drops down to H+ when I make a call and the call quality on 3G is terrible in an area of Toronto dominated by highrises.
Click to expand...
Click to collapse
I feel you but it is sad that we are not getting the service we are paying for. SIM Plan is new and the phone is one of the latest. It's just disapppointing. I'm calling Tech Support right now but it seems they don't know anything either but they are very helpful though.
bashblues said:
I feel you but it is sad that we are not getting the service we are paying for. SIM Plan is new and the phone is one of the latest. It's just disapppointing. I'm calling Tech Support right now but it seems they don't know anything either but they are very helpful though.
Click to expand...
Click to collapse
Tech Support isn't allowed to tell you that features like VoLTE, VoWiFi, and in the case of some device brands, like OnePlus, 5G are not provisioned by the system because those device IMEI's and model numbers are not whitelisted in the system and there for, not permitted to use these features.
Hey Guys! I messed up. I tried changing the CSC just for the sake of trying it via the dialer by typing *#272*IMEI# and chose randomly BTB. Now VOLTE is gone, signal is only 4G (Not even 4G+) like before. I tried typing it again to change it back to my original CSC (XTC) but it wont work anymore (the *#272*IMEI#). Is there another way for me to change it back to the original CSC?
Was able to change it back to XTC using SamFW. Was hoping to change it to RWC (Rogers) but it failed. Oh well! XTC (4G+) is better than BTB (4G) but was hoping if RWC was forced I could have gotten a 5G signal (I think).